From a9a31b1de5776a3b08a82101a4fa711294f0dd1d Mon Sep 17 00:00:00 2001
From: "Manuel A. Fernandez Montecelo" <manuel.montezelo@gmail.com>
Date: Fri, 27 May 2016 14:28:30 +0100
Subject: Imported Upstream version 0.9.6+really0.9.3

---
 gnulib-m4/printf-frexpl.m4 | 36 ++++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 10 deletions(-)

(limited to 'gnulib-m4/printf-frexpl.m4')

diff --git a/gnulib-m4/printf-frexpl.m4 b/gnulib-m4/printf-frexpl.m4
index ab0eccf0..14ffe1fc 100644
--- a/gnulib-m4/printf-frexpl.m4
+++ b/gnulib-m4/printf-frexpl.m4
@@ -1,5 +1,5 @@
-# printf-frexpl.m4 serial 10
-dnl Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+# printf-frexpl.m4 serial 6
+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.
@@ -9,10 +9,17 @@ 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.
-  gl_CHECK_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])
+    ])
   if test $gl_cv_func_frexpl_no_libm = yes; then
     gl_FUNC_FREXPL_WORKS
     case "$gl_cv_func_frexpl_works" in
@@ -28,11 +35,20 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
     AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
       [Define if the frexpl function is available in libc.])
     dnl Also check whether it's declared.
-    dnl Mac OS 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>]])
+    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>])
   fi
 
-  gl_CHECK_LDEXPL_NO_LIBM
+  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])
+    ])
   if test $gl_cv_func_ldexpl_no_libm = yes; then
     gl_FUNC_LDEXPL_WORKS
     case "$gl_cv_func_ldexpl_works" in
@@ -40,8 +56,8 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
         AC_DEFINE([HAVE_LDEXPL_IN_LIBC], [1],
           [Define if the ldexpl function is available in libc.])
         dnl Also check whether it's declared.
-        dnl Mac OS 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>]])
+        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>])
         ;;
     esac
   fi
-- 
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