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authorReid Spencer <rspencer@reidspencer.com>2004-09-07 14:23:53 +0000
committerReid Spencer <rspencer@reidspencer.com>2004-09-07 14:23:53 +0000
commit53ecd51d974a9befce557f213de828c455d28500 (patch)
tree8e888786085bd413ed1b59bb03681582f657efd2 /autoconf/m4/func_isinf.m4
parent491f6812ef173989612d987fa8706fd38e2e673f (diff)
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move AC_FUNC_ISINF and AC_FUNC_ISNAN to their own files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16224 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4/func_isinf.m4')
-rw-r--r--autoconf/m4/func_isinf.m424
1 files changed, 24 insertions, 0 deletions
diff --git a/autoconf/m4/func_isinf.m4 b/autoconf/m4/func_isinf.m4
new file mode 100644
index 0000000000..dc0c22e925
--- /dev/null
+++ b/autoconf/m4/func_isinf.m4
@@ -0,0 +1,24 @@
+#
+# This function determins if the the isinf function isavailable on this
+# platform.
+#
+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);}])
+AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h],
+ [finite], [<ieeefp.h>],
+ [#include <ieeefp.h>
+ int foo(float f) {return finite(f);}])
+])
+
+