Build s_nan* objects from a generic template

This requires adding a macro to synthesize the call
to __strto*_nan.  Since this is likely to be the only
usage ever for strto* functions in generated libm
calls, a dedicated macro is defined for it.

4 files changed, 11 insertions, 73 deletions

diff --git a/math/Makefile b/math/Makefile
index 367f73e227..6c58b970d6 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -50,7 +50,8 @@ gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF		  \
 	         s_cacoshF s_ccosF s_ccoshF s_casinF s_csinF s_casinhF	  \
 		 k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
 		 s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF	  \
-		 s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF
+		 s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF	  \
+		 s_nanF
 
 libm-calls =								  \
 	e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
@@ -66,7 +67,7 @@ libm-calls =								  \
 	w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r	  \
 	w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF	  \
 	w_ilogbF							  \
-	s_fpclassifyF s_nanF s_truncF		  	  	          \
+	s_fpclassifyF s_truncF						  \
 	s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF	  \
 	s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F	  \
 	s_issignalingF $(calls:s_%=m_%) x2y2m1F				  \
diff --git a/math/s_nan.c b/math/s_nan_template.c
index 03e95f56ad..cf47a2f07f 100644
--- a/math/s_nan.c
+++ b/math/s_nan_template.c
@@ -24,13 +24,14 @@
 #include <ieee754.h>
 
 
-double
-__nan (const char *tagp)
+FLOAT
+M_DECL_FUNC (__nan) (const char *tagp)
 {
-  return __strtod_nan (tagp, NULL, 0);
+  return M_STRTO_NAN (tagp, NULL, 0);
 }
-weak_alias (__nan, nan)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__nan, __nanl)
-weak_alias (__nan, nanl)
+
+declare_mgen_alias (__nan, nan)
+
+#if M_LIBM_NEED_COMPAT (nan)
+declare_mgen_libm_compat (__nan, nan)
 #endif
diff --git a/math/s_nanf.c b/math/s_nanf.c
deleted file mode 100644
index 3046720a11..0000000000
--- a/math/s_nanf.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Return quiet nan.
-   Copyright (C) 1997-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
-   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/>.  */
-
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ieee754.h>
-
-
-float
-__nanf (const char *tagp)
-{
-  return __strtof_nan (tagp, NULL, 0);
-}
-weak_alias (__nanf, nanf)
diff --git a/math/s_nanl.c b/math/s_nanl.c
deleted file mode 100644
index 4b7b3d563c..0000000000
--- a/math/s_nanl.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Return quiet nan.
-   Copyright (C) 1997-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
-   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/>.  */
-
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ieee754.h>
-
-
-long double
-__nanl (const char *tagp)
-{
-  return __strtold_nan (tagp, NULL, 0);
-}
-weak_alias (__nanl, nanl)