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| author | Bruno Haible <bruno@clisp.org> | 2011-10-11 11:13:24 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2011-10-11 11:14:30 +0200 |
| commit | 1f5817b9653bcf4e6ad534ce36df9a10c6f5fb6e (patch) | |
| tree | 9e14b35f4b1999f2c417c5f53213c266278bfaac /m4 | |
| parent | 6e33eaed1cd5ddcdfc48476059012fed68f71f8e (diff) | |
| download | gnulib-1f5817b9653bcf4e6ad534ce36df9a10c6f5fb6e.tar.gz | |
asinl: Simplify for platforms where 'long double' == 'double'.
* lib/asinl.c (asinl) [HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]: New
alternative implementation.
* m4/asinl.m4 (gl_FUNC_ASINL): Require gl_LONG_DOUBLE_VS_DOUBLE.
Determine ASINL_LIBM according to HAVE_SAME_LONG_DOUBLE_AS_DOUBLE.
* modules/asinl (Depends-on): Add asin. Update conditions.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/asinl.m4 | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/m4/asinl.m4 b/m4/asinl.m4 index 2df2663259..cef97a245c 100644 --- a/m4/asinl.m4 +++ b/m4/asinl.m4 @@ -1,4 +1,4 @@ -# asinl.m4 serial 5 +# asinl.m4 serial 6 dnl Copyright (C) 2010-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -7,6 +7,8 @@ dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_ASINL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) + AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) + dnl Persuade glibc <math.h> to declare asinl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) @@ -56,12 +58,17 @@ AC_DEFUN([gl_FUNC_ASINL], HAVE_DECL_ASINL=0 HAVE_ASINL=0 dnl Find libraries needed to link lib/asinl.c. - AC_REQUIRE([gl_FUNC_SQRTL]) - dnl Append $SQRTL_LIBM to ASINL_LIBM, avoiding gratuitous duplicates. - case " $ASINL_LIBM " in - *" $SQRTL_LIBM "*) ;; - *) ASINL_LIBM="$ASINL_LIBM $SQRTL_LIBM" ;; - esac + if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then + AC_REQUIRE([gl_FUNC_ASIN]) + ASINL_LIBM="$ASIN_LIBM" + else + AC_REQUIRE([gl_FUNC_SQRTL]) + dnl Append $SQRTL_LIBM to ASINL_LIBM, avoiding gratuitous duplicates. + case " $ASINL_LIBM " in + *" $SQRTL_LIBM "*) ;; + *) ASINL_LIBM="$ASINL_LIBM $SQRTL_LIBM" ;; + esac + fi fi AC_SUBST([ASINL_LIBM]) ]) |