Split libm-test.inc by function.

Continuing the process of splitting up libm tests into more reasonably
sized units, this patch splits libm-test.inc into 121 separate
libm-test-<function>.inc files, one per array of test data.  (There
are 126 libm *_test functions, but five of those are for functions
that are aliases for test purposes and so share arrays of test data.)

In the present patch, the 121 files get processed separately by
gen-libm-test.pl, each using only the auto-libm-test-out-<function>
file that is relevant (/dev/null for functions not using
auto-libm-test-* at all).  This effectively eliminates the
serialization on running gen-libm-test.pl.  However, the resulting .c
files still all get #included together, so compiling the limited
number of libm tests using libm-test.inc may still act as a
serialization point (the compilations still all have 40 MB of code to
process).  libm-test.inc doesn't actually have anything in it any more
that needs gen-libm-test.pl processing, but is left as a .inc file
that gets processed to produce a .c file, rather than being renamed,
since the intent of this patch is as an intermediate step before
libm-test.inc gets removed and tests get compiled separately for each
function being tested.

Tested for x86_64.

	* math/libm-test.inc: Move all tests of individual functions to
	libm-test-*.inc and #include libm-test-*.c files.
	(acos_test_data): Remove.
	(acos_test): Likewise.
	(acosh_test_data): Likewise.
	(acosh_test): Likewise.
	(asin_test_data): Likewise.
	(asin_test): Likewise.
	(asinh_test_data): Likewise.
	(asinh_test): Likewise.
	(atan_test_data): Likewise.
	(atan_test): Likewise.
	(atanh_test_data): Likewise.
	(atanh_test): Likewise.
	(atan2_test_data): Likewise.
	(atan2_test): Likewise.
	(cabs_test_data): Likewise.
	(cabs_test): Likewise.
	(cacos_test_data): Likewise.
	(cacos_test): Likewise.
	(cacosh_test_data): Likewise.
	(cacosh_test): Likewise.
	(canonicalize_test_data): Likewise.
	(canonicalize_test): Likewise.
	(carg_test_data): Likewise.
	(carg_test): Likewise.
	(casin_test_data): Likewise.
	(casin_test): Likewise.
	(casinh_test_data): Likewise.
	(casinh_test): Likewise.
	(catan_test_data): Likewise.
	(catan_test): Likewise.
	(catanh_test_data): Likewise.
	(catanh_test): Likewise.
	(cbrt_test_data): Likewise.
	(cbrt_test): Likewise.
	(ccos_test_data): Likewise.
	(ccos_test): Likewise.
	(ccosh_test_data): Likewise.
	(ccosh_test): Likewise.
	(ceil_test_data): Likewise.
	(ceil_test): Likewise.
	(cexp_test_data): Likewise.
	(cexp_test): Likewise.
	(cimag_test_data): Likewise.
	(cimag_test): Likewise.
	(clog_test_data): Likewise.
	(clog_test): Likewise.
	(clog10_test_data): Likewise.
	(clog10_test): Likewise.
	(conj_test_data): Likewise.
	(conj_test): Likewise.
	(copysign_test_data): Likewise.
	(copysign_test): Likewise.
	(cos_test_data): Likewise.
	(cos_test): Likewise.
	(cosh_test_data): Likewise.
	(cosh_test): Likewise.
	(cpow_test_data): Likewise.
	(cpow_test): Likewise.
	(cproj_test_data): Likewise.
	(cproj_test): Likewise.
	(creal_test_data): Likewise.
	(creal_test): Likewise.
	(csin_test_data): Likewise.
	(csin_test): Likewise.
	(csinh_test_data): Likewise.
	(csinh_test): Likewise.
	(csqrt_test_data): Likewise.
	(csqrt_test): Likewise.
	(ctan_test_data): Likewise.
	(ctan_test): Likewise.
	(ctanh_test_data): Likewise.
	(ctanh_test): Likewise.
	(erf_test_data): Likewise.
	(erf_test): Likewise.
	(erfc_test_data): Likewise.
	(erfc_test): Likewise.
	(exp_test_data): Likewise.
	(exp_test): Likewise.
	(exp10_test_data): Likewise.
	(exp10_test): Likewise.
	(pow10_test): Likewise.
	(exp2_test_data): Likewise.
	(exp2_test): Likewise.
	(expm1_test_data): Likewise.
	(expm1_test): Likewise.
	(fabs_test_data): Likewise.
	(fabs_test): Likewise.
	(fdim_test_data): Likewise.
	(fdim_test): Likewise.
	(floor_test_data): Likewise.
	(floor_test): Likewise.
	(fma_test_data): Likewise.
	(fma_test): Likewise.
	(fmax_test_data): Likewise.
	(fmax_test): Likewise.
	(fmaxmag_test_data): Likewise.
	(fmaxmag_test): Likewise.
	(fmin_test_data): Likewise.
	(fmin_test): Likewise.
	(fminmag_test_data): Likewise.
	(fminmag_test): Likewise.
	(fmod_test_data): Likewise.
	(fmod_test): Likewise.
	(fpclassify_test_data): Likewise.
	(fpclassify_test): Likewise.
	(frexp_test_data): Likewise.
	(frexp_test): Likewise.
	(fromfp_test_data): Likewise.
	(fromfp_test): Likewise.
	(fromfpx_test_data): Likewise.
	(fromfpx_test): Likewise.
	(getpayload_test_data): Likewise.
	(getpayload_test): Likewise.
	(hypot_test_data): Likewise.
	(hypot_test): Likewise.
	(ilogb_test_data): Likewise.
	(ilogb_test): Likewise.
	(iscanonical_test_data): Likewise.
	(iscanonical_test): Likewise.
	(iseqsig_test_data): Likewise.
	(iseqsig_test): Likewise.
	(isfinite_test_data): Likewise.
	(isfinite_test): Likewise.
	(finite_test): Likewise.
	(isgreater_test_data): Likewise.
	(isgreater_test): Likewise.
	(isgreaterequal_test_data): Likewise.
	(isgreaterequal_test): Likewise.
	(isinf_test_data): Likewise.
	(isinf_test): Likewise.
	(isless_test_data): Likewise.
	(isless_test): Likewise.
	(islessequal_test_data): Likewise.
	(islessequal_test): Likewise.
	(islessgreater_test_data): Likewise.
	(islessgreater_test): Likewise.
	(isnan_test_data): Likewise.
	(isnan_test): Likewise.
	(isnormal_test_data): Likewise.
	(isnormal_test): Likewise.
	(issignaling_test_data): Likewise.
	(issignaling_test): Likewise.
	(issubnormal_test_data): Likewise.
	(issubnormal_test): Likewise.
	(isunordered_test_data): Likewise.
	(isunordered_test): Likewise.
	(iszero_test_data): Likewise.
	(iszero_test): Likewise.
	(j0_test_data): Likewise.
	(j0_test): Likewise.
	(j1_test_data): Likewise.
	(j1_test): Likewise.
	(jn_test_data): Likewise.
	(jn_test): Likewise.
	(lgamma_test_data): Likewise.
	(lgamma_test): Likewise.
	(gamma_test): Likewise.
	(llogb_test_data): Likewise.
	(llogb_test): Likewise.
	(lrint_test_data): Likewise.
	(lrint_test): Likewise.
	(llrint_test_data): Likewise.
	(llrint_test): Likewise.
	(log_test_data): Likewise.
	(log_test): Likewise.
	(log10_test_data): Likewise.
	(log10_test): Likewise.
	(log1p_test_data): Likewise.
	(log1p_test): Likewise.
	(log2_test_data): Likewise.
	(log2_test): Likewise.
	(logb_test_data): Likewise.
	(logb_test): Likewise.
	(lround_test_data): Likewise.
	(lround_test): Likewise.
	(llround_test_data): Likewise.
	(llround_test): Likewise.
	(modf_test_data): Likewise.
	(modf_test): Likewise.
	(nearbyint_test_data): Likewise.
	(nearbyint_test): Likewise.
	(nextafter_test_data): Likewise.
	(nextafter_test): Likewise.
	(nextup_test_data): Likewise.
	(nextup_test): Likewise.
	(nextdown_test_data): Likewise.
	(nextdown_test): Likewise.
	(nexttoward_test_data): Likewise.
	(nexttoward_test): Likewise.
	(pow_test_data): Likewise.
	(pow_test): Likewise.
	(remainder_test_data): Likewise.
	(remainder_test): Likewise.
	(drem_test): Likewise.
	(remquo_test_data): Likewise.
	(remquo_test): Likewise.
	(rint_test_data): Likewise.
	(rint_test): Likewise.
	(round_test_data): Likewise.
	(round_test): Likewise.
	(roundeven_test_data): Likewise.
	(roundeven_test): Likewise.
	(scalb_test_data): Likewise.
	(scalb_test): Likewise.
	(scalbn_test_data): Likewise.
	(scalbn_test): Likewise.
	(ldexp_test): Likewise.
	(scalbln_test_data): Likewise.
	(scalbln_test): Likewise.
	(setpayload_test_data): Likewise.
	(setpayload_test): Likewise.
	(setpayloadsig_test_data): Likewise.
	(setpayloadsig_test): Likewise.
	(signbit_test_data): Likewise.
	(signbit_test): Likewise.
	(sin_test_data): Likewise.
	(sin_test): Likewise.
	(sincos_test_data): Likewise.
	(sincos_test): Likewise.
	(sinh_test_data): Likewise.
	(sinh_test): Likewise.
	(sqrt_test_data): Likewise.
	(sqrt_test): Likewise.
	(tan_test_data): Likewise.
	(tan_test): Likewise.
	(tanh_test_data): Likewise.
	(tanh_test): Likewise.
	(tgamma_test_data): Likewise.
	(tgamma_test): Likewise.
	(totalorder_test_data): Likewise.
	(totalorder_test): Likewise.
	(totalordermag_test_data): Likewise.
	(totalordermag_test): Likewise.
	(trunc_test_data): Likewise.
	(trunc_test): Likewise.
	(ufromfp_test_data): Likewise.
	(ufromfp_test): Likewise.
	(ufromfpx_test_data): Likewise.
	(ufromfpx_test): Likewise.
	(y0_test_data): Likewise.
	(y0_test): Likewise.
	(y1_test_data): Likewise.
	(y1_test): Likewise.
	(yn_test_data): Likewise.
	(yn_test): Likewise.
	(significand_test_data): Likewise.
	(significand_test): Likewise.
	* math/Makefile (auto-libm-test-out-files): Remove variable.
	(libm-test-funcs-noauto): New variable.
	(libm-test-funcs-all): Likewise.
	(libm-test-c-auto): Likewise.
	(libm-test-c-noauto): Likewise.
	(libm-tests-generated): Add $(libm-test-c-auto) and
	$(libm-test-c-noauto).
	(generated): Do not add auto-libm-test-out.
	(libm-test-c-auto-obj): New variable.
	(libm-test-c-noauto-obj): Likewise.
	($(objpfx)libm-test.c): Do not generate or use auto-libm-test-out.
	($(libm-test-c-noauto-obj)): New static pattern rule.
	($(libm-test-c-auto-obj)): Likewise.
	(libm-test-incs): New variable.
	($(objpfx)libm-have-vector-test.h): Depend on $(libm-test-incs)
	and pass it to gen-libm-have-vector-test.sh.
	* math/gen-libm-have-vector-test.sh: Expect list of .inc files to
	be passed on command line.
	* math/libm-test-acos.inc: New file.  Content from
	math/libm-test.inc.
	* math/libm-test-acosh.inc: Likewise.
	* math/libm-test-asin.inc: Likewise.
	* math/libm-test-asinh.inc: Likewise.
	* math/libm-test-atan.inc: Likewise.
	* math/libm-test-atan2.inc: Likewise.
	* math/libm-test-atanh.inc: Likewise.
	* math/libm-test-cabs.inc: Likewise.
	* math/libm-test-cacos.inc: Likewise.
	* math/libm-test-cacosh.inc: Likewise.
	* math/libm-test-canonicalize.inc: Likewise.
	* math/libm-test-carg.inc: Likewise.
	* math/libm-test-casin.inc: Likewise.
	* math/libm-test-casinh.inc: Likewise.
	* math/libm-test-catan.inc: Likewise.
	* math/libm-test-catanh.inc: Likewise.
	* math/libm-test-cbrt.inc: Likewise.
	* math/libm-test-ccos.inc: Likewise.
	* math/libm-test-ccosh.inc: Likewise.
	* math/libm-test-ceil.inc: Likewise.
	* math/libm-test-cexp.inc: Likewise.
	* math/libm-test-cimag.inc: Likewise.
	* math/libm-test-clog.inc: Likewise.
	* math/libm-test-clog10.inc: Likewise.
	* math/libm-test-conj.inc: Likewise.
	* math/libm-test-copysign.inc: Likewise.
	* math/libm-test-cos.inc: Likewise.
	* math/libm-test-cosh.inc: Likewise.
	* math/libm-test-cpow.inc: Likewise.
	* math/libm-test-cproj.inc: Likewise.
	* math/libm-test-creal.inc: Likewise.
	* math/libm-test-csin.inc: Likewise.
	* math/libm-test-csinh.inc: Likewise.
	* math/libm-test-csqrt.inc: Likewise.
	* math/libm-test-ctan.inc: Likewise.
	* math/libm-test-ctanh.inc: Likewise.
	* math/libm-test-erf.inc: Likewise.
	* math/libm-test-erfc.inc: Likewise.
	* math/libm-test-exp.inc: Likewise.
	* math/libm-test-exp10.inc: Likewise.
	* math/libm-test-exp2.inc: Likewise.
	* math/libm-test-expm1.inc: Likewise.
	* math/libm-test-fabs.inc: Likewise.
	* math/libm-test-fdim.inc: Likewise.
	* math/libm-test-floor.inc: Likewise.
	* math/libm-test-fma.inc: Likewise.
	* math/libm-test-fmax.inc: Likewise.
	* math/libm-test-fmaxmag.inc: Likewise.
	* math/libm-test-fmin.inc: Likewise.
	* math/libm-test-fminmag.inc: Likewise.
	* math/libm-test-fmod.inc: Likewise.
	* math/libm-test-fpclassify.inc: Likewise.
	* math/libm-test-frexp.inc: Likewise.
	* math/libm-test-fromfp.inc: Likewise.
	* math/libm-test-fromfpx.inc: Likewise.
	* math/libm-test-getpayload.inc: Likewise.
	* math/libm-test-hypot.inc: Likewise.
	* math/libm-test-ilogb.inc: Likewise.
	* math/libm-test-iscanonical.inc: Likewise.
	* math/libm-test-iseqsig.inc: Likewise.
	* math/libm-test-isfinite.inc: Likewise.
	* math/libm-test-isgreater.inc: Likewise.
	* math/libm-test-isgreaterequal.inc: Likewise.
	* math/libm-test-isinf.inc: Likewise.
	* math/libm-test-isless.inc: Likewise.
	* math/libm-test-islessequal.inc: Likewise.
	* math/libm-test-islessgreater.inc: Likewise.
	* math/libm-test-isnan.inc: Likewise.
	* math/libm-test-isnormal.inc: Likewise.
	* math/libm-test-issignaling.inc: Likewise.
	* math/libm-test-issubnormal.inc: Likewise.
	* math/libm-test-isunordered.inc: Likewise.
	* math/libm-test-iszero.inc: Likewise.
	* math/libm-test-j0.inc: Likewise.
	* math/libm-test-j1.inc: Likewise.
	* math/libm-test-jn.inc: Likewise.
	* math/libm-test-lgamma.inc: Likewise.
	* math/libm-test-llogb.inc: Likewise.
	* math/libm-test-llrint.inc: Likewise.
	* math/libm-test-llround.inc: Likewise.
	* math/libm-test-log.inc: Likewise.
	* math/libm-test-log10.inc: Likewise.
	* math/libm-test-log1p.inc: Likewise.
	* math/libm-test-log2.inc: Likewise.
	* math/libm-test-logb.inc: Likewise.
	* math/libm-test-lrint.inc: Likewise.
	* math/libm-test-lround.inc: Likewise.
	* math/libm-test-modf.inc: Likewise.
	* math/libm-test-nearbyint.inc: Likewise.
	* math/libm-test-nextafter.inc: Likewise.
	* math/libm-test-nextdown.inc: Likewise.
	* math/libm-test-nexttoward.inc: Likewise.
	* math/libm-test-nextup.inc: Likewise.
	* math/libm-test-pow.inc: Likewise.
	* math/libm-test-remainder.inc: Likewise.
	* math/libm-test-remquo.inc: Likewise.
	* math/libm-test-rint.inc: Likewise.
	* math/libm-test-round.inc: Likewise.
	* math/libm-test-roundeven.inc: Likewise.
	* math/libm-test-scalb.inc: Likewise.
	* math/libm-test-scalbln.inc: Likewise.
	* math/libm-test-scalbn.inc: Likewise.
	* math/libm-test-setpayload.inc: Likewise.
	* math/libm-test-setpayloadsig.inc: Likewise.
	* math/libm-test-signbit.inc: Likewise.
	* math/libm-test-significand.inc: Likewise.
	* math/libm-test-sin.inc: Likewise.
	* math/libm-test-sincos.inc: Likewise.
	* math/libm-test-sinh.inc: Likewise.
	* math/libm-test-sqrt.inc: Likewise.
	* math/libm-test-tan.inc: Likewise.
	* math/libm-test-tanh.inc: Likewise.
	* math/libm-test-tgamma.inc: Likewise.
	* math/libm-test-totalorder.inc: Likewise.
	* math/libm-test-totalordermag.inc: Likewise.
	* math/libm-test-trunc.inc: Likewise.
	* math/libm-test-ufromfp.inc: Likewise.
	* math/libm-test-ufromfpx.inc: Likewise.
	* math/libm-test-y0.inc: Likewise.
	* math/libm-test-y1.inc: Likewise.
	* math/libm-test-yn.inc: Likewise.
	* math/README.libm-test: Update.

1 files changed, 711 insertions, 0 deletions

diff --git a/math/libm-test-cacos.inc b/math/libm-test-cacos.inc
new file mode 100644
index 0000000000..2a4e2f945a
--- /dev/null
+++ b/math/libm-test-cacos.inc
@@ -0,0 +1,711 @@
+/* Test cacos.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+static const struct test_c_c_data cacos_test_data[] =
+  {
+    TEST_c_c (cacos, 0, 0, lit_pi_2_d, minus_zero),
+    TEST_c_c (cacos, minus_zero, 0, lit_pi_2_d, minus_zero),
+    TEST_c_c (cacos, minus_zero, minus_zero, lit_pi_2_d, 0.0),
+    TEST_c_c (cacos, 0, minus_zero, lit_pi_2_d, 0.0),
+
+    TEST_c_c (cacos, minus_infty, plus_infty, lit_pi_3_m_4_d, minus_infty),
+    TEST_c_c (cacos, minus_infty, minus_infty, lit_pi_3_m_4_d, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, plus_infty, lit_pi_4_d, minus_infty),
+    TEST_c_c (cacos, plus_infty, minus_infty, lit_pi_4_d, plus_infty),
+
+    TEST_c_c (cacos, -10.0, plus_infty, lit_pi_2_d, minus_infty),
+    TEST_c_c (cacos, -10.0, minus_infty, lit_pi_2_d, plus_infty),
+    TEST_c_c (cacos, 0, plus_infty, lit_pi_2_d, minus_infty),
+    TEST_c_c (cacos, 0, minus_infty, lit_pi_2_d, plus_infty),
+    TEST_c_c (cacos, 0.1L, plus_infty, lit_pi_2_d, minus_infty),
+    TEST_c_c (cacos, 0.1L, minus_infty, lit_pi_2_d, plus_infty),
+
+    TEST_c_c (cacos, minus_infty, 0, lit_pi, minus_infty),
+    TEST_c_c (cacos, minus_infty, minus_zero, lit_pi, plus_infty),
+    TEST_c_c (cacos, minus_infty, 100, lit_pi, minus_infty),
+    TEST_c_c (cacos, minus_infty, -100, lit_pi, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, 0, 0.0, minus_infty),
+    TEST_c_c (cacos, plus_infty, minus_zero, 0.0, plus_infty),
+    TEST_c_c (cacos, plus_infty, 0.5, 0.0, minus_infty),
+    TEST_c_c (cacos, plus_infty, -0.5, 0.0, plus_infty),
+
+    TEST_c_c (cacos, plus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),
+    TEST_c_c (cacos, minus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),
+
+    TEST_c_c (cacos, 0, qnan_value, lit_pi_2_d, qnan_value),
+    TEST_c_c (cacos, minus_zero, qnan_value, lit_pi_2_d, qnan_value),
+
+    TEST_c_c (cacos, qnan_value, plus_infty, qnan_value, minus_infty),
+    TEST_c_c (cacos, qnan_value, minus_infty, qnan_value, plus_infty),
+
+    TEST_c_c (cacos, 10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+    TEST_c_c (cacos, -10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+
+    TEST_c_c (cacos, qnan_value, 0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+    TEST_c_c (cacos, qnan_value, -0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
+
+    TEST_c_c (cacos, qnan_value, qnan_value, qnan_value, qnan_value),
+
+    TEST_c_c (cacos, plus_zero, -1.5L, lit_pi_2_d, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, minus_zero, -1.5L, lit_pi_2_d, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, plus_zero, -1.0L, lit_pi_2_d, 0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, minus_zero, -1.0L, lit_pi_2_d, 0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, plus_zero, -0.5L, lit_pi_2_d, 0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, minus_zero, -0.5L, lit_pi_2_d, 0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, plus_zero, 0.5L, lit_pi_2_d, -0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, minus_zero, 0.5L, lit_pi_2_d, -0.4812118250596034474977589134243684231352L),
+    TEST_c_c (cacos, plus_zero, 1.0L, lit_pi_2_d, -0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, minus_zero, 1.0L, lit_pi_2_d, -0.8813735870195430252326093249797923090282L),
+    TEST_c_c (cacos, plus_zero, 1.5L, lit_pi_2_d, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, minus_zero, 1.5L, lit_pi_2_d, -1.194763217287109304111930828519090523536L),
+
+    TEST_c_c (cacos, -1.5L, plus_zero, lit_pi, -0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, -1.5L, minus_zero, lit_pi, 0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, -1.0L, plus_zero, lit_pi, minus_zero),
+    TEST_c_c (cacos, -1.0L, minus_zero, lit_pi, plus_zero),
+    TEST_c_c (cacos, -0.5L, plus_zero, 2.094395102393195492308428922186335256131L, minus_zero),
+    TEST_c_c (cacos, -0.5L, minus_zero, 2.094395102393195492308428922186335256131L, plus_zero),
+    TEST_c_c (cacos, 0.5L, plus_zero, 1.047197551196597746154214461093167628066L, minus_zero),
+    TEST_c_c (cacos, 0.5L, minus_zero, 1.047197551196597746154214461093167628066L, plus_zero),
+    TEST_c_c (cacos, 1.0L, plus_zero, plus_zero, minus_zero),
+    TEST_c_c (cacos, 1.0L, minus_zero, plus_zero, plus_zero),
+    TEST_c_c (cacos, 1.5L, plus_zero, plus_zero, -0.9624236501192068949955178268487368462704L),
+    TEST_c_c (cacos, 1.5L, minus_zero, plus_zero, 0.9624236501192068949955178268487368462704L),
+
+    TEST_c_c (cacos, 0x1p50L, 1.0L, 8.881784197001252323389053344727730248720e-16L, -3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, 0x1p50L, -1.0L, 8.881784197001252323389053344727730248720e-16L, 3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, -0x1p50L, 1.0L, 3.141592653589792350284223683154270545292L, -3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, -0x1p50L, -1.0L, 3.141592653589792350284223683154270545292L, 3.535050620855721078027883819436720218708e1L),
+    TEST_c_c (cacos, 1.0L, 0x1p50L, 1.570796326794895731052901991514519103193L, -3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, -1.0L, 0x1p50L, 1.570796326794897507409741391764983781004L, -3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, 1.0L, -0x1p50L, 1.570796326794895731052901991514519103193L, 3.535050620855721078027883819436759661753e1L),
+    TEST_c_c (cacos, -1.0L, -0x1p50L, 1.570796326794897507409741391764983781004L, 3.535050620855721078027883819436759661753e1L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1p500L, 1.0L, 3.054936363499604682051979393213617699789e-151L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 0x1p500L, -1.0L, 3.054936363499604682051979393213617699789e-151L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -0x1p500L, 1.0L, 3.141592653589793238462643383279502884197L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -0x1p500L, -1.0L, 3.141592653589793238462643383279502884197L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, 1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
+    TEST_c_c (cacos, -1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
+#endif
+#if MAX_EXP >= 16384
+    TEST_c_c (cacos, 0x1p5000L, 1.0L, 7.079811261048172892385615158694057552948e-1506L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 0x1p5000L, -1.0L, 7.079811261048172892385615158694057552948e-1506L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -0x1p5000L, 1.0L, 3.141592653589793238462643383279502884197L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -0x1p5000L, -1.0L, 3.141592653589793238462643383279502884197L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, 1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
+    TEST_c_c (cacos, -1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
+#endif
+
+    TEST_c_c (cacos, 0x1.fp127L, 0x1.fp127L, 7.853981633974483096156608458198757210493e-1L, -8.973081118419833726837456344608533993585e1L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp1023L, 0x1.fp1023L, 7.853981633974483096156608458198757210493e-1L, -7.107906849659093345062145442726115449315e2L),
+#endif
+#if MAX_EXP >= 16384
+    TEST_c_c (cacos, 0x1.fp16383L, 0x1.fp16383L, 7.853981633974483096156608458198757210493e-1L, -1.135753137836666928715489992987020363057e4L),
+#endif
+
+    TEST_c_c (cacos, 0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442097L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442097L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442100L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442100L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-129L, 3.141592653589793238462643383279502884195L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-129L, 3.141592653589793238462643383279502884195L, 9.624236501192068949955178268487368462704e-1L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
+#endif
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
+    TEST_c_c (cacos, 1.5L, 0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -1.5L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
+    TEST_c_c (cacos, 1.5L, -0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -1.5L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
+#endif
+
+    TEST_c_c (cacos, 0.5L, 1.0L, 1.221357263937683325603909865564381489366L, -9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, 0.5L, -1.0L, 1.221357263937683325603909865564381489366L, 9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, -0.5L, 1.0L, 1.920235389652109912858733517715121394831L, -9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, -0.5L, -1.0L, 1.920235389652109912858733517715121394831L, 9.261330313501824245501244453057873152694e-1L),
+    TEST_c_c (cacos, 1.0L, 0.5L, 6.748888455860063801646649673121744318756e-1L, -7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, -1.0L, 0.5L, 2.466703808003786858297978415967328452322L, -7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, 1.0L, -0.5L, 6.748888455860063801646649673121744318756e-1L, 7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, -1.0L, -0.5L, 2.466703808003786858297978415967328452322L, 7.328576759736452608886724437653071523305e-1L),
+    TEST_c_c (cacos, 0.25L, 1.0L, 1.394493894017929688812643125003661339452L, -8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, 0.25L, -1.0L, 1.394493894017929688812643125003661339452L, 8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, -0.25L, 1.0L, 1.747098759571863549650000258275841544745L, -8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, -0.25L, -1.0L, 1.747098759571863549650000258275841544745L, 8.924633639033482359562124741744951972772e-1L),
+    TEST_c_c (cacos, 1.0L, 0.25L, 4.890443302710802929202843732146540079124e-1L, -5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, -1.0L, 0.25L, 2.652548323318712945542359010064848876285L, -5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, 1.0L, -0.25L, 4.890443302710802929202843732146540079124e-1L, 5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, -1.0L, -0.25L, 2.652548323318712945542359010064848876285L, 5.097911466811016354623559941115413499164e-1L),
+    TEST_c_c (cacos, 0x1.fp-10L, 1.0L, 1.569458417435338878318763342108699202986L, -8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, 0x1.fp-10L, -1.0L, 1.569458417435338878318763342108699202986L, 8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, -0x1.fp-10L, 1.0L, 1.572134236154454360143880041170803681211L, -8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, -0x1.fp-10L, -1.0L, 1.572134236154454360143880041170803681211L, 8.813742198809567991336704287826445879025e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, -4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-10L, 3.098101355958774410750062883737683164607L, -4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, 4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-10L, 3.098101355958774410750062883737683164607L, 4.350501469856803800217957402220976497152e-2L),
+    TEST_c_c (cacos, 0x1.fp-30L, 1.0L, 1.570796325518966635014803151387033957091L, -8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, 0x1.fp-30L, -1.0L, 1.570796325518966635014803151387033957091L, 8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, -0x1.fp-30L, 1.0L, 1.570796328070826603447840231892468927106L, -8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, -0x1.fp-30L, -1.0L, 1.570796328070826603447840231892468927106L, 8.813735870195430258081932989769495326854e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, -4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-30L, 3.141550174918818561961484385371624132331L, -4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, 4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-30L, 3.141550174918818561961484385371624132331L, 4.247867098745151888768727039216644758847e-5L),
+    TEST_c_c (cacos, 0x1.fp-100L, 1.0L, 1.570796326794896619231321691638670687364L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-100L, -1.0L, 1.570796326794896619231321691638670687364L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-100L, 1.0L, 1.570796326794896619231321691640832196834L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-100L, -1.0L, 1.570796326794896619231321691640832196834L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, -1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-100L, 3.141592653589792002170605123018614219682L, -1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, 1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-100L, 3.141592653589792002170605123018614219682L, 1.236292038260260888664514866457202186027e-15L),
+    TEST_c_c (cacos, 0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442097L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442097L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442101L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442101L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, -5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-129L, 3.141592653589793238409287030509680549213L, -5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, 5.335635276982233498398987585285818977933e-20L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-129L, 3.141592653589793238409287030509680549213L, 5.335635276982233498398987585285818977933e-20L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, -4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-1000L, 3.141592653589793238462643383279502884197L, -4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, 4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-1000L, 3.141592653589793238462643383279502884197L, 4.252291453851660175550490409247739011867e-151L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, -7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, 7.340879205566679497036857179189356754017e-155L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 7.340879205566679497036857179189356754017e-155L),
+#endif
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, -9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-10000L, 3.141592653589793238462643383279502884197L, -9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, 9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-10000L, 3.141592653589793238462643383279502884197L, 9.854680208706673586644342922051388714633e-1506L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
+    TEST_c_c (cacos, 1.0L, 0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, -9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, -1.0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, 1.0L, -0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, 9.023632056840860275214893047597614177639e-2467L),
+    TEST_c_c (cacos, -1.0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.023632056840860275214893047597614177639e-2467L),
+#endif
+
+    TEST_c_c (cacos, 0x1p-23L, 0x1.000002p0L, 1.570796242501204621739026081991856762292L, -8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0x1.000002p0L, 1.570796242501204621739026081991856762292L, 8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0x1.000002p0L, 1.570796411088588616723617301287646121905L, -8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0x1.000002p0L, 1.570796411088588616723617301287646121905L, 8.813736713132400470205730751186547909968e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0x1p-23L, 2.222118384408546368406374049167636760903e-4L, -5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0x1p-23L, 3.141370441751352383825802745874586120521L, -5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0x1p-23L, 2.222118384408546368406374049167636760903e-4L, 5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0x1p-23L, 3.141370441751352383825802745874586120521L, 5.364668491573609633134147164031476452679e-4L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442097L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442097L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442101L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442101L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0x1.fp-129L, 3.141592653589793238462643383279502878367L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0x1.fp-129L, 3.141592653589793238462643383279502878367L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
+    TEST_c_c (cacos, 0x1.000002p0L, 0.0L, 0.0L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, 0x1.000002p0L, -0.0L, 0.0L, 4.882812451493617206486388134172712975070e-4L),
+    TEST_c_c (cacos, -0x1.000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.882812451493617206486388134172712975070e-4L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, -8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, 8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, -8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, 8.813735870195431822418551933572982483664e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1p-52L, 9.590301705980041385828904092662391018164e-9L, -2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1p-52L, 3.141592643999491532482601997450598791535L, -2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1p-52L, 9.590301705980041385828904092662391018164e-9L, 2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1p-52L, 3.141592643999491532482601997450598791535L, 2.315303644582684770975188768022139415020e-8L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, -2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, 2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, 0.0L, 0.0L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, 0x1.0000000000001p0L, -0.0L, 0.0L, 2.107342425544701550354780375182800088393e-8L),
+    TEST_c_c (cacos, -0x1.0000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
+#endif
+#if MANT_DIG >= 64
+    TEST_c_c (cacos, 0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, -8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, 8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, -8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, 8.813735870195430253092739958139610131001e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1p-63L, 2.119177303101063432592523199680782317447e-10L, -5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1p-63L, 3.141592653377875508152537040020250564229L, -5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1p-63L, 2.119177303101063432592523199680782317447e-10L, 5.116146586219826555037807251857670783420e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1p-63L, 3.141592653377875508152537040020250564229L, 5.116146586219826555037807251857670783420e-10L),
+# if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, 4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
+# endif
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0.0L, 0.0L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0.0L, 0.0L, 4.656612873077392578082927418388212703712e-10L),
+    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
+#endif
+#if MANT_DIG >= 106
+    TEST_c_c (cacos, 0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1p-106L, 5.394221422390606848017034778914096659726e-17L, -2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1p-106L, 3.141592653589793184520429159373434404027L, -2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1p-106L, 5.394221422390606848017034778914096659726e-17L, 2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1p-106L, 3.141592653589793184520429159373434404027L, 2.285028863093221674154232933662774454211e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0.0L, 0.0L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0.0L, 0.0L, 2.220446049250313080847263336181636063482e-16L),
+    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
+#endif
+#if MANT_DIG >= 113
+    TEST_c_c (cacos, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 4.767863183742677481693563511435642755521e-18L, -2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1p-113L, 3.141592653589793233694780199536825402504L, -2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 4.767863183742677481693563511435642755521e-18L, 2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1p-113L, 3.141592653589793233694780199536825402504L, 2.019699255375255198156433710951064632386e-17L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, -0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0.0L, 0.0L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0.0L, 0.0L, 1.962615573354718824241727964954454332780e-17L),
+    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
+#endif
+
+    TEST_c_c (cacos, 0x1p-23L, 0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, -8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, 8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, -8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, 8.813735448726963984495965873956465777250e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1p-23L, 4.391863861910487109445187743978204002614e-4L, -2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1p-23L, 3.141153467203602189751698864505105063797L, -2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1p-23L, 4.391863861910487109445187743978204002614e-4L, 2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1p-23L, 3.141153467203602189751698864505105063797L, 2.714321200917194650737217746780928423385e-4L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, -8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1.fp-129L, 3.141247386605077034875040133796864147700L, -8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, 8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1.fp-129L, 3.141247386605077034875040133796864147700L, 8.245504387859737323891843603996428534945e-36L),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, 0.0L, 3.452669847162035876032494826387364972849e-4L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, 0.0L, 3.141247386605077034875040133796864147700L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffp0L, -0.0L, 3.452669847162035876032494826387364972849e-4L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffp0L, -0.0L, 3.141247386605077034875040133796864147700L, 0.0L),
+    TEST_c_c (cacos, 0x1p-23L, 0.5L, 1.570796220170866625230343643673321150378L, -4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, 0x1p-23L, -0.5L, 1.570796220170866625230343643673321150378L, 4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, -0x1p-23L, 0.5L, 1.570796433418926613232299739606181733819L, -4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, -0x1p-23L, -0.5L, 1.570796433418926613232299739606181733819L, 4.812118250596059896127318386463676808798e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-23L, 1.047197551196603215914744618665204532273L, -1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, -0.5L, 0x1p-23L, 2.094395102393190022547898764614298351924L, -1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, 0.5L, -0x1p-23L, 1.047197551196603215914744618665204532273L, 1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, -0.5L, -0x1p-23L, 2.094395102393190022547898764614298351924L, 1.376510308240943236356088341381173571841e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442096L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442096L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442101L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442101L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-129L, 1.047197551196597746154214461093167628066L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-129L, 2.094395102393195492308428922186335256131L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-129L, 1.047197551196597746154214461093167628066L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-129L, 2.094395102393195492308428922186335256131L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1p-23L, 0x1p-23L, 1.570796207585607068450636380271254316214L, -1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, 0x1p-23L, -0x1p-23L, 1.570796207585607068450636380271254316214L, 1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, -0x1p-23L, 0x1p-23L, 1.570796446004186170012007003008248567984L, -1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, -0x1p-23L, -0x1p-23L, 1.570796446004186170012007003008248567984L, 1.192092895507818146886315028596704749235e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442096L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442096L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442101L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442101L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1p-23L, 0x1.fp-129L, 1.570796207585607068449789347324000006847L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1p-23L, 0x1.fp-129L, 1.570796446004186170012854035955502877351L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1p-23L, -0x1.fp-129L, 1.570796207585607068449789347324000006847L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1p-23L, -0x1.fp-129L, 1.570796446004186170012854035955502877351L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, -0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
+    TEST_c_c (cacos, 0x1p-23L, 0.0L, 1.570796207585607068449789347324000006847L, -0.0L),
+    TEST_c_c (cacos, -0x1p-23L, 0.0L, 1.570796446004186170012854035955502877351L, -0.0L),
+    TEST_c_c (cacos, 0x1p-23L, -0.0L, 1.570796207585607068449789347324000006847L, 0.0L),
+    TEST_c_c (cacos, -0x1p-23L, -0.0L, 1.570796446004186170012854035955502877351L, 0.0L),
+    TEST_c_c (cacos, 0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442096L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, 0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442096L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442101L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+    TEST_c_c (cacos, -0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442101L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, -8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, 8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, -8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, 8.813735870195429467279863907910458761820e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1p-52L, 1.895456983915074112227925127005564372844e-8L, -1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1p-52L, 3.141592634635223399311902261000251614142L, -1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1p-52L, 1.895456983915074112227925127005564372844e-8L, 1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1p-52L, 3.141592634635223399311902261000251614142L, 1.171456840272878582596796205397918831268e-8L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, 3.141592638688632044614986995416067458693L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, 3.141592638688632044614986995416067458693L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0.0L, 1.490116119384765638786343542550461592240e-8L, -0.0L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0.0L, 3.141592638688632044614986995416067458693L, -0.0L),
+    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0.0L, 1.490116119384765638786343542550461592240e-8L, 0.0L),
+    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0.0L, 3.141592638688632044614986995416067458693L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-52L, 0.5L, 1.570796326794896420628589431857911675917L, -4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, 0x1p-52L, -0.5L, 1.570796326794896420628589431857911675917L, 4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, -0x1p-52L, 0.5L, 1.570796326794896817834053951421591208280L, -4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, -0x1p-52L, -0.5L, 1.570796326794896817834053951421591208280L, 4.812118250596034474977589134243772428682e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-52L, 1.047197551196597746154214461093186605110L, -2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, -0.5L, 0x1p-52L, 2.094395102393195492308428922186316279087L, -2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, 0.5L, -0x1p-52L, 1.047197551196597746154214461093186605110L, 2.563950248511418570403591756798643804971e-16L),
+    TEST_c_c (cacos, -0.5L, -0x1p-52L, 2.094395102393195492308428922186316279087L, 2.563950248511418570403591756798643804971e-16L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-1025L, 1.047197551196597746154214461093167628066L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-1025L, 2.094395102393195492308428922186335256131L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-1025L, 1.047197551196597746154214461093167628066L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-1025L, 2.094395102393195492308428922186335256131L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0x1p-52L, 0x1p-52L, 1.570796326794896397186716766608443357372L, -2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, 0x1p-52L, -0x1p-52L, 1.570796326794896397186716766608443357372L, 2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, -0x1p-52L, 0x1p-52L, 1.570796326794896841275926616671059526825L, -2.220446049250313080847263336181677117148e-16L),
+    TEST_c_c (cacos, -0x1p-52L, -0x1p-52L, 1.570796326794896841275926616671059526825L, 2.220446049250313080847263336181677117148e-16L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1p-52L, 0x1.fp-1025L, 1.570796326794896397186716766608443357372L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-52L, 0x1.fp-1025L, 1.570796326794896841275926616671059526825L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1p-52L, -0x1.fp-1025L, 1.570796326794896397186716766608443357372L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-52L, -0x1.fp-1025L, 1.570796326794896841275926616671059526825L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, -0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
+    TEST_c_c (cacos, 0x1p-52L, 0.0L, 1.570796326794896397186716766608443357372L, -0.0L),
+    TEST_c_c (cacos, -0x1p-52L, 0.0L, 1.570796326794896841275926616671059526825L, -0.0L),
+    TEST_c_c (cacos, 0x1p-52L, -0.0L, 1.570796326794896397186716766608443357372L, 0.0L),
+    TEST_c_c (cacos, -0x1p-52L, -0.0L, 1.570796326794896841275926616671059526825L, 0.0L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+#if MANT_DIG >= 64
+    TEST_c_c (cacos, 0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, -8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, 8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, -8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, 8.813735870195430251942769895627079569937e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1p-63L, 4.188407771167967636741951941902992986043e-10L, -2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1p-63L, 3.141592653170952461345846619605307690007L, -2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1p-63L, 4.188407771167967636741951941902992986043e-10L, 2.588578361325995866221775673638805081337e-10L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1p-63L, 3.141592653170952461345846619605307690007L, 2.588578361325995866221775673638805081337e-10L),
+# if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, -2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.141592653260520984471283759942320330996L, -2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, 2.472906068161537187835415298076415423459e-4923L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1.fp-16385L, 3.141592653260520984471283759942320330996L, 2.472906068161537187835415298076415423459e-4923L),
+# endif
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0.0L, 3.292722539913596233371825532007990724506e-10L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0.0L, 3.141592653260520984471283759942320330996L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0.0L, 3.292722539913596233371825532007990724506e-10L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0.0L, 3.141592653260520984471283759942320330996L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-63L, 0.5L, 1.570796326794896619134347701278529840650L, -4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, 0x1p-63L, -0.5L, 1.570796326794896619134347701278529840650L, 4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, -0x1p-63L, 0.5L, 1.570796326794896619328295682000973043547L, -4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, -0x1p-63L, -0.5L, 1.570796326794896619328295682000973043547L, 4.812118250596034474977589134243684231373e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-63L, 1.047197551196597746154214461093167628070L, -1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, -0.5L, 0x1p-63L, 2.094395102393195492308428922186335256127L, -1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, 0.5L, -0x1p-63L, 1.047197551196597746154214461093167628070L, 1.251928832280966098829878787499365228659e-19L),
+    TEST_c_c (cacos, -0.5L, -0x1p-63L, 2.094395102393195492308428922186335256127L, 1.251928832280966098829878787499365228659e-19L),
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1.fp-16385L, 1.047197551196597746154214461093167628066L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0.5L, 0x1.fp-16385L, 2.094395102393195492308428922186335256131L, -9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0.5L, -0x1.fp-16385L, 1.047197551196597746154214461093167628066L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0.5L, -0x1.fp-16385L, 2.094395102393195492308428922186335256131L, 9.402257155670418112159334875199821342890e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0x1p-63L, 0x1p-63L, 1.570796326794896619122901474391200998698L, -1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, 0x1p-63L, -0x1p-63L, 1.570796326794896619122901474391200998698L, 1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, -0x1p-63L, 0x1p-63L, 1.570796326794896619339741908888301885499L, -1.084202172485504434007452800869941711430e-19L),
+    TEST_c_c (cacos, -0x1p-63L, -0x1p-63L, 1.570796326794896619339741908888301885499L, 1.084202172485504434007452800869941711430e-19L),
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1p-63L, 0x1.fp-16385L, 1.570796326794896619122901474391200998698L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-63L, 0x1.fp-16385L, 1.570796326794896619339741908888301885499L, -8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1p-63L, -0x1.fp-16385L, 1.570796326794896619122901474391200998698L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-63L, -0x1.fp-16385L, 1.570796326794896619339741908888301885499L, 8.142593549724601460479922838826119584465e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0.0L, 0x1p-63L, 1.570796326794896619231321691639751442099L, -1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, -0.0L, -0x1p-63L, 1.570796326794896619231321691639751442099L, 1.084202172485504434007452800869941711424e-19L),
+    TEST_c_c (cacos, 0x1p-63L, 0.0L, 1.570796326794896619122901474391200998698L, -0.0L),
+    TEST_c_c (cacos, -0x1p-63L, 0.0L, 1.570796326794896619339741908888301885499L, -0.0L),
+    TEST_c_c (cacos, 0x1p-63L, -0.0L, 1.570796326794896619122901474391200998698L, 0.0L),
+    TEST_c_c (cacos, -0x1p-63L, -0.0L, 1.570796326794896619339741908888301885499L, 0.0L),
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.fp-16385L, 1.570796326794896619231321691639751442099L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.fp-16385L, 1.570796326794896619231321691639751442099L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+#if MANT_DIG >= 106
+    TEST_c_c (cacos, 0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639734010571L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1p-105L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1p-105L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639768873627L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 1.997188458999618357060632049675702684031e-16L, -1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1p-105L, 3.141592653589793038743797483317667178134L, -1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 1.997188458999618357060632049675702684031e-16L, 1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1p-105L, 3.141592653589793038743797483317667178134L, 1.234330349600789959989661887846005659983e-16L),
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0x1.fp-1025L, 3.141592653589793081453397514901996944859L, -3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 1.570092458683775059393382371963565104164e-16L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0x1.fp-1025L, 3.141592653589793081453397514901996944859L, 3.432186888910770473784103112009399360940e-293L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffcp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797835932642e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 1.570092458683775059393382371963565104164e-16L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, 0.0L, 3.141592653589793081453397514901996944859L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 1.570092458683775059393382371963565104164e-16L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffcp0L, -0.0L, 3.141592653589793081453397514901996944859L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-105L, 0.5L, 1.570796326794896619231321691639729392766L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1p-105L, -0.5L, 1.570796326794896619231321691639729392766L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-105L, 0.5L, 1.570796326794896619231321691639773491431L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-105L, -0.5L, 1.570796326794896619231321691639773491431L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-105L, 1.047197551196597746154214461093167628066L, -2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, -0.5L, 0x1p-105L, 2.094395102393195492308428922186335256131L, -2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, 0.5L, -0x1p-105L, 1.047197551196597746154214461093167628066L, 2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, -0.5L, -0x1p-105L, 2.094395102393195492308428922186335256131L, 2.846556599890768890940941645338546615370e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639726790195L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639726790195L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1p-105L, 0x1p-105L, 1.570796326794896619231321691639776094002L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1p-105L, -0x1p-105L, 1.570796326794896619231321691639776094002L, 2.465190328815661891911651766508706967729e-32L),
+#if !TEST_COND_binary32
+    TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639726790195L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-105L, 0x1.fp-1025L, 1.570796326794896619231321691639776094002L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, 0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639726790195L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+    TEST_c_c (cacos, -0x1p-105L, -0x1.fp-1025L, 1.570796326794896619231321691639776094002L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0.0L, 0x1p-105L, 1.570796326794896619231321691639751442099L, -2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, -0.0L, -0x1p-105L, 1.570796326794896619231321691639751442099L, 2.465190328815661891911651766508706967729e-32L),
+    TEST_c_c (cacos, 0x1p-105L, 0.0L, 1.570796326794896619231321691639726790195L, -0.0L),
+    TEST_c_c (cacos, -0x1p-105L, 0.0L, 1.570796326794896619231321691639776094002L, -0.0L),
+    TEST_c_c (cacos, 0x1p-105L, -0.0L, 1.570796326794896619231321691639726790195L, 0.0L),
+    TEST_c_c (cacos, -0x1p-105L, -0.0L, 1.570796326794896619231321691639776094002L, 0.0L),
+#if MANT_DIG >= 113
+    TEST_c_c (cacos, 0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751305915L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1p-112L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1p-112L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751578282L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 1.765281878332676474347460257221369818872e-17L, -1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1p-112L, 3.141592653589793220809824599952738140723L, -1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 1.765281878332676474347460257221369818872e-17L, 1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1p-112L, 3.141592653589793220809824599952738140723L, 1.091004200533850618345330909857103457781e-17L),
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, -5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0x1.fp-16385L, 3.141592653589793224584855575465046128902L, -5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 1.387778780781445675529539585113525401762e-17L, 5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0x1.fp-16385L, 3.141592653589793224584855575465046128902L, 5.867357004219059108790368268900490184505e-4916L),
+    TEST_c_c (cacos, 0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0.0L, 0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, -0.0L, -0x0.ffffffffffffffffffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797922409363e-1L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 1.387778780781445675529539585113525401762e-17L, -0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, 0.0L, 3.141592653589793224584855575465046128902L, -0.0L),
+    TEST_c_c (cacos, 0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 1.387778780781445675529539585113525401762e-17L, 0.0L),
+    TEST_c_c (cacos, -0x0.ffffffffffffffffffffffffffff8p0L, -0.0L, 3.141592653589793224584855575465046128902L, 0.0L),
+#endif
+    TEST_c_c (cacos, 0x1p-112L, 0.5L, 1.570796326794896619231321691639751269838L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0x1p-112L, -0.5L, 1.570796326794896619231321691639751269838L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-112L, 0.5L, 1.570796326794896619231321691639751614359L, -4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, -0x1p-112L, -0.5L, 1.570796326794896619231321691639751614359L, 4.812118250596034474977589134243684231352e-1L),
+    TEST_c_c (cacos, 0.5L, 0x1p-112L, 1.047197551196597746154214461093167628066L, -2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, -0.5L, 0x1p-112L, 2.094395102393195492308428922186335256131L, -2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, 0.5L, -0x1p-112L, 1.047197551196597746154214461093167628066L, 2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, -0.5L, -0x1p-112L, 2.094395102393195492308428922186335256131L, 2.223872343664663196047610660420739543258e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751249506L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751249506L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1p-112L, 0x1p-112L, 1.570796326794896619231321691639751634692L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1p-112L, -0x1p-112L, 1.570796326794896619231321691639751634692L, 1.925929944387235853055977942584927318538e-34L),
+#if MIN_EXP <= -16381
+    TEST_c_c (cacos, 0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1.fp-16385L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0x1.fp-16385L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751249506L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-112L, 0x1.fp-16385L, 1.570796326794896619231321691639751634692L, -8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, 0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751249506L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+    TEST_c_c (cacos, -0x1p-112L, -0x1.fp-16385L, 1.570796326794896619231321691639751634692L, 8.142593549724601460479922838826119584417e-4933L, UNDERFLOW_EXCEPTION),
+#endif
+    TEST_c_c (cacos, 0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0.0L, 0x1p-112L, 1.570796326794896619231321691639751442099L, -1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, -0.0L, -0x1p-112L, 1.570796326794896619231321691639751442099L, 1.925929944387235853055977942584927318538e-34L),
+    TEST_c_c (cacos, 0x1p-112L, 0.0L, 1.570796326794896619231321691639751249506L, -0.0L),
+    TEST_c_c (cacos, -0x1p-112L, 0.0L, 1.570796326794896619231321691639751634692L, -0.0L),
+    TEST_c_c (cacos, 0x1p-112L, -0.0L, 1.570796326794896619231321691639751249506L, 0.0L),
+    TEST_c_c (cacos, -0x1p-112L, -0.0L, 1.570796326794896619231321691639751634692L, 0.0L),
+
+    TEST_c_c (cacos, 0.75L, 1.25L, 1.11752014915610270578240049553777969L, -1.13239363160530819522266333696834467L),
+    TEST_c_c (cacos, -2, -3, 2.1414491111159960199416055713254211L, 1.9833870299165354323470769028940395L),
+  };
+
+static void
+cacos_test (void)
+{
+  ALL_RM_TEST (cacos, 0, cacos_test_data, RUN_TEST_LOOP_c_c, END_COMPLEX);
+}
+
+/*
+ * Local Variables:
+ * mode:c
+ * End:
+ */