diff options
Diffstat (limited to 'gnulib-m4/printf-frexp.m4')
| -rw-r--r-- | gnulib-m4/printf-frexp.m4 | 25 |
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]) ]) |