From 59d2e50d793102d1abd6fc0820b2335e3c4b1169 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Sat, 3 Mar 2007 13:57:24 +0000 Subject: [PATCH] New module 'printf-frexpl'. --- m4/printf-frexpl.m4 | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 m4/printf-frexpl.m4 diff --git a/m4/printf-frexpl.m4 b/m4/printf-frexpl.m4 new file mode 100644 index 000000000..f66489099 --- /dev/null +++ b/m4/printf-frexpl.m4 @@ -0,0 +1,43 @@ +# printf-frexpl.m4 serial 1 +dnl Copyright (C) 2007 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Check how to define printf_frexpl() without linking with libm. + +AC_DEFUN([gl_FUNC_PRINTF_FREXPL], +[ + AC_REQUIRE([gt_TYPE_LONGDOUBLE]) + if test $gt_cv_c_long_double = yes; then + AC_CACHE_CHECK([whether frexpl can be used without linking with libm], + [gl_cv_func_frexpl_no_libm], + [ + AC_TRY_LINK([#include + long double x; + int y;], + [return frexpl (x, &y) < 1;], + [gl_cv_func_frexpl_no_libm=yes], + [gl_cv_func_frexpl_no_libm=no]) + ]) + if test $gl_cv_func_frexpl_no_libm = yes; then + AC_DEFINE([HAVE_FREXPL_IN_LIBC], 1, + [Define if the frexpl function is available in libc.]) + fi + + AC_CACHE_CHECK([whether ldexpl can be used without linking with libm], + [gl_cv_func_ldexpl_no_libm], + [ + AC_TRY_LINK([#include + long double x; + int y;], + [return ldexpl (x, y) < 1;], + [gl_cv_func_ldexpl_no_libm=yes], + [gl_cv_func_ldexpl_no_libm=no]) + ]) + if test $gl_cv_func_ldexpl_no_libm = yes; then + AC_DEFINE([HAVE_LDEXPL_IN_LIBC], 1, + [Define if the ldexpl function is available in libc.]) + fi + fi +]) -- 2.11.0