X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fisfinite.m4;h=72dbcc64595809222a9da32aa6177586f1dc7bfb;hb=a2eb92ef60dd05e9423948534ab483f7ffeb0647;hp=cc65da13350705335355823d47ffb64b14788df8;hpb=e208f8e46f21ba67c27ae7a6973be433815d9ee2;p=gnulib.git

diff --git a/m4/isfinite.m4 b/m4/isfinite.m4
index cc65da133..72dbcc645 100644
--- a/m4/isfinite.m4
+++ b/m4/isfinite.m4
@@ -1,4 +1,4 @@
-# isfinite.m4 serial 9
+# isfinite.m4 serial 10
 dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -11,7 +11,8 @@ AC_DEFUN([gl_ISFINITE],
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   AC_CHECK_DECLS([isfinite], , , [#include <math.h>])
   if test "$ac_cv_have_decl_isfinite" = yes; then
-    gl_CHECK_MATH_LIB([ISFINITE_LIBM], [x = isfinite (x);])
+    gl_CHECK_MATH_LIB([ISFINITE_LIBM],
+     [x = isfinite (x) + isfinite ((float) x);])
     if test "$ISFINITE_LIBM" != missing; then
       dnl Test whether isfinite() on 'long double' works.
       gl_ISFINITEL_WORKS