From aec0821ce78e5f006ed45c063b4a129292bb739a Mon Sep 17 00:00:00 2001 From: "Gabriel F. T. Gomes" Date: Thu, 15 Dec 2016 16:41:58 -0200 Subject: Add new templates for IEEE wrappers Several wrappers for IEEE functions use _LIB_VERSION / matherr / __kernel_standard functionality, which we want to obsolete. New wrappers, such as for float128, must not use this functionality. This patch adds new wrappers that only __set_errno and can be used by the new float128 wrappers. Tested for powerpc64le. * math/Makefile: Add wrappers to gen-libm-calls. * math/w_acos_template.c: New file. * math/w_acosh_template.c: Likewise. * math/w_asin_template.c: Likewise. * math/w_atan2_template.c: Likewise. * math/w_atanh_template.c: Likewise. * math/w_cosh_template.c: Likewise. * math/w_exp10_template.c: Likewise. * math/w_exp2_template.c: Likewise. * math/w_exp_template.c: Likewise. * math/w_fmod_template.c: Likewise. * math/w_hypot_template.c: Likewise. * math/w_j0_template.c: Likewise. * math/w_j1_template.c: Likewise. * math/w_jn_template.c: Likewise. * math/w_lgamma_r_template.c: Likewise. * math/w_lgamma_template.c: Likewise. * math/w_log10_template.c: Likewise. * math/w_log2_template.c: Likewise. * math/w_log_template.c: Likewise. * math/w_pow_template.c: Likewise. * math/w_remainder_template.c: Likewise. * math/w_sinh_template.c: Likewise. * math/w_sqrt_template.c: Likewise. * math/w_tgamma_template.c: Likewise.: Likewise. * sysdeps/generic/math-type-macros-double.h (__USE_WRAPPER_TEMPLATE): New macro to control inclusion of the new wrappers. * sysdeps/generic/math-type-macros-float.h: Likewise. * sysdeps/generic/math-type-macros-ldouble.h: Likewise. --- math/w_tgamma_template.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 math/w_tgamma_template.c (limited to 'math/w_tgamma_template.c') diff --git a/math/w_tgamma_template.c b/math/w_tgamma_template.c new file mode 100644 index 0000000000..277a8377e3 --- /dev/null +++ b/math/w_tgamma_template.c @@ -0,0 +1,54 @@ +/* Wrapper to set errno for tgamma. + Copyright (C) 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 + . */ + +/* Only build wrappers from the templates for the types that define the macro + below. This macro is set in math-type-macros-.h in sysdeps/generic + for each floating-point type. */ +#if __USE_WRAPPER_TEMPLATE + +# include +# include +# include + +#define M_CALL_FUNC_X(x) x ## _r +#define M_CALL_FUNC(x) M_CALL_FUNC_X (x) + +FLOAT +M_DECL_FUNC (__tgamma) (FLOAT x) +{ + int local_signgam; + FLOAT y = M_CALL_FUNC (M_SUF (__ieee754_gamma)) (x, &local_signgam); + + if (__glibc_unlikely (!isfinite (y) || y == 0) + && (isfinite (x) || (isinf (x) && x < 0))) + { + if (x == 0) + /* Pole error: tgamma(x=0). */ + __set_errno (ERANGE); + else if (M_SUF (__floor) (x) == x && x < 0) + /* Domain error: tgamma(integer x<0). */ + __set_errno (EDOM); + else + /* Overflow or underflow. */ + __set_errno (ERANGE); + } + return local_signgam < 0 ? -y : y; +} +declare_mgen_alias (__tgamma, tgamma) + +#endif /* __USE_WRAPPER_TEMPLATE. */ -- cgit v1.2.3