Add call to check for isinf().

Patch contributed by Bill Wendling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15053 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index abece9f0d9c1bde5a4e73e95cb127878d1ebe5ea..89a4eef4f731f64968b06bfbc00dc286fc412d1f 100644 (file)
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -278,6 +278,7 @@ AC_CXX_HAVE_BI_ITERATOR
 AC_CXX_HAVE_FWD_ITERATOR
 
 AC_FUNC_ISNAN
+AC_FUNC_ISINF
 
 dnl Checks for library functions.
 AC_FUNC_ALLOCA