Imported Upstream version 1.5

[debian/gzip] / m4 / printf-frexpl.m4

diff --git a/m4/printf-frexpl.m4 b/m4/printf-frexpl.m4
index 14ffe1fc1a7d05a04b5007ed69c4f23bfe21cc7a..55dd6bc18e302e24b26b7a1dec0d8adc521a8f35 100644 (file)
--- a/m4/printf-frexpl.m4
+++ b/m4/printf-frexpl.m4
@@ -1,5 +1,5 @@
-# printf-frexpl.m4 serial 6
-dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
+# printf-frexpl.m4 serial 9
+dnl Copyright (C) 2007, 2009-2012 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.
@@ -9,17 +9,10 @@ dnl Check how to define printf_frexpl() without linking with libm.
 AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
+
   dnl Subset of gl_FUNC_FREXPL_NO_LIBM.
-  AC_CACHE_CHECK([whether frexpl can be used without linking with libm],
-    [gl_cv_func_frexpl_no_libm],
-    [
-      AC_TRY_LINK([#include <math.h>
-                   long double x;
-                   int y;],
-                  [return frexpl (x, &y) < 1;],
-        [gl_cv_func_frexpl_no_libm=yes],
-        [gl_cv_func_frexpl_no_libm=no])
-    ])
+  gl_CHECK_FREXPL_NO_LIBM
   if test $gl_cv_func_frexpl_no_libm = yes; then
     gl_FUNC_FREXPL_WORKS
     case "$gl_cv_func_frexpl_works" in
@@ -36,19 +29,10 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
       [Define if the frexpl function is available in libc.])
     dnl Also check whether it's declared.
     dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
-    AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
+    AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
   fi
 
-  AC_CACHE_CHECK([whether ldexpl can be used without linking with libm],
-    [gl_cv_func_ldexpl_no_libm],
-    [
-      AC_TRY_LINK([#include <math.h>
-                   long double x;
-                   int y;],
-                  [return ldexpl (x, y) < 1;],
-        [gl_cv_func_ldexpl_no_libm=yes],
-        [gl_cv_func_ldexpl_no_libm=no])
-    ])
+  gl_CHECK_LDEXPL_NO_LIBM
   if test $gl_cv_func_ldexpl_no_libm = yes; then
     gl_FUNC_LDEXPL_WORKS
     case "$gl_cv_func_ldexpl_works" in
@@ -57,7 +41,7 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
           [Define if the ldexpl function is available in libc.])
         dnl Also check whether it's declared.
         dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
-        AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>])
+        AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [[#include <math.h>]])
         ;;
     esac
   fi