[gtk+] Bug 670499-configure.ac: Check for nearbyint(), isinf() and isnan()

[Chun-wei Fan <fanchunwei src gnome org>]

commit c97f0b660c094d005844c0357df9bbc67c03861e
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu Apr 5 18:15:45 2012 +0800

    Bug 670499-configure.ac: Check for nearbyint(), isinf() and isnan()
    
    nearbyint(), isinf() and isnan() are C99 functions, so check for them.
    
    Also clean up configure.ac a little bit as the checks for rint() and
    round() can be a bit simpler, according to Matthias' suggestions.

 configure.ac |   14 +++-----------
 1 files changed, 3 insertions(+), 11 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a87fb3f..1ac1b23 100644
--- a/configure.ac
+++ b/configure.ac
@@ -749,17 +749,9 @@ AC_CHECK_FUNCS(mallinfo)
 AC_CHECK_FUNCS(getresuid)
 AC_TYPE_UID_T
 
-# Check for round()
-AC_CHECK_LIB(m,round,have_round=yes,have_round=no)
-if test $have_round = yes; then
-    AC_DEFINE(HAVE_ROUND, 1, [Define to 1 if round() is available])
-fi
-
-# Check for rint()
-AC_CHECK_LIB(m,rint,have_rint=yes,have_rint=no)
-if test $have_rint = yes; then
-    AC_DEFINE(HAVE_RINT, 1, [Define to 1 if rint() is available])
-fi
+# Check for round(), rint(), isnan(), isinf() and nearbyint()
+AC_CHECK_LIB(m,round,,)
+AC_CHECK_FUNCS(round rint isnan isinf nearbyint)
 
 # Checks for gdkspawn
 AC_CHECK_HEADERS(crt_externs.h)