From: Brian Gaeke <gaeke@uiuc.edu>
Date: Wed, 21 Jul 2004 03:14:39 +0000 (+0000)
Subject: Add support for checking for isinf().
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=4cc02ac6526014ab46caabac8724ec7db0d49f9e;p=oota-llvm.git

Add support for checking for isinf().
Patch contributed by Bill Wendling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15052 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/autoconf/acinclude.m4 b/autoconf/acinclude.m4
index 364ecca5086..a157839f222 100644
--- a/autoconf/acinclude.m4
+++ b/autoconf/acinclude.m4
@@ -6282,3 +6282,17 @@ AC_SINGLE_CXX_CHECK([HAVE_STD_ISNAN_IN_CMATH], [ac_cv_func_std_isnan_in_cmath],
                      using std::isnan; int foo(float f) {return isnan(f);}])
 ])
 
+AC_DEFUN([AC_FUNC_ISINF],[
+AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H],    [ac_cv_func_isinf_in_math_h],   
+                    [isinf], [<math.h>],
+                    [#include <math.h>
+                     int foo(float f) {return isinf(f);}])
+AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH],     [ac_cv_func_isinf_in_cmath],    
+                    [isinf], [<cmath>],
+                    [#include <cmath>
+                     int foo(float f) {return isinf(f);}])
+AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath],
+                    [std::isinf], [<cmath>],
+                    [#include <cmath>
+                     using std::isinf; int foo(float f) {return isinf(f);}])
+])