summaryrefslogtreecommitdiff
path: root/gnulib-m4/printf-frexp.m4
diff options
context:
space:
mode:
Diffstat (limited to 'gnulib-m4/printf-frexp.m4')
-rw-r--r--gnulib-m4/printf-frexp.m425
1 files changed, 16 insertions, 9 deletions
diff --git a/gnulib-m4/printf-frexp.m4 b/gnulib-m4/printf-frexp.m4
index b923c82b..c42391a4 100644
--- a/gnulib-m4/printf-frexp.m4
+++ b/gnulib-m4/printf-frexp.m4
@@ -1,5 +1,5 @@
-# printf-frexp.m4 serial 5
-dnl Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+# printf-frexp.m4 serial 3
+dnl Copyright (C) 2007, 2009, 2010 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.
@@ -8,7 +8,16 @@ dnl Check how to define printf_frexp() without linking with libm.
AC_DEFUN([gl_FUNC_PRINTF_FREXP],
[
- AC_REQUIRE([gl_CHECK_FREXP_NO_LIBM])
+ AC_CACHE_CHECK([whether frexp can be used without linking with libm],
+ [gl_cv_func_frexp_no_libm],
+ [
+ AC_TRY_LINK([#include <math.h>
+ double x;
+ int y;],
+ [return frexp (x, &y) < 1;],
+ [gl_cv_func_frexp_no_libm=yes],
+ [gl_cv_func_frexp_no_libm=no])
+ ])
if test $gl_cv_func_frexp_no_libm = yes; then
gl_FUNC_FREXP_WORKS
case "$gl_cv_func_frexp_works" in
@@ -22,12 +31,10 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXP],
AC_CACHE_CHECK([whether ldexp can be used without linking with libm],
[gl_cv_func_ldexp_no_libm],
[
- AC_LINK_IFELSE(
- [AC_LANG_PROGRAM(
- [[#include <math.h>
- double x;
- int y;]],
- [[return ldexp (x, y) < 1;]])],
+ AC_TRY_LINK([#include <math.h>
+ double x;
+ int y;],
+ [return ldexp (x, y) < 1;],
[gl_cv_func_ldexp_no_libm=yes],
[gl_cv_func_ldexp_no_libm=no])
])