From 10c7caab2dd7bee241876e8714c3b970d38c95a5 Mon Sep 17 00:00:00 2001
From: Costa Vitor <vitor@quasar-20.(none)>
Date: Mon, 15 Jun 2009 15:00:31 -0500
Subject: [PATCH] old machines may not have isinf

---
 config.h.in  | 2 ++
 configure    | 6 ++++--
 configure.in | 4 ++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/config.h.in b/config.h.in
index 51403fa64..7dc78f3c2 100644
--- a/config.h.in
+++ b/config.h.in
@@ -161,6 +161,7 @@
 #undef  HAVE_FETESTEXCEPT
 #undef  HAVE_FGETPOS
 #undef  HAVE_FINITE
+#undef  HAVE_FPCLASS
 #undef  HAVE_FTIME
 #undef  HAVE_GETCWD
 #undef  HAVE_GETENV
@@ -174,6 +175,7 @@
 #undef  HAVE_GETTIMEOFDAY
 #undef  HAVE_GETWD
 #undef  HAVE_ISATTY
+#undef  HAVE_ISINF
 #undef  HAVE_ISNAN
 #undef  HAVE_KILL
 #undef  HAVE_LABS
diff --git a/configure b/configure
index 632dfe99c..5bccc0e81 100755
--- a/configure
+++ b/configure
@@ -14611,7 +14611,8 @@ done
 
 
 
-for ac_func in fesettrapenable fgetpos finite ftime getcwd getenv
+
+for ac_func in fesettrapenable fgetpos finite fpclass ftime getcwd getenv
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15030,7 +15031,8 @@ done
 
 
 
-for ac_func in isatty isnan kill labs link lgamma
+
+for ac_func in isatty isnan isinf kill labs link lgamma
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
diff --git a/configure.in b/configure.in
index 879859653..a9fe7eb77 100644
--- a/configure.in
+++ b/configure.in
@@ -1401,11 +1401,11 @@ dnl Checks for library functions.
 AC_TYPE_SIGNAL
 AC_CHECK_FUNCS(acosh asinh atanh chdir ctime dlopen dup2)
 AC_CHECK_FUNCS(feclearexcept)
-AC_CHECK_FUNCS(fesettrapenable fgetpos finite ftime getcwd getenv)
+AC_CHECK_FUNCS(fesettrapenable fgetpos finite fpclass ftime getcwd getenv)
 AC_CHECK_FUNCS(gethostbyname gethostid gethostname)
 AC_CHECK_FUNCS(gethrtime getpagesize)
 AC_CHECK_FUNCS(getpwnam getrusage gettimeofday getwd)
-AC_CHECK_FUNCS(isatty isnan kill labs link lgamma)
+AC_CHECK_FUNCS(isatty isnan isinf kill labs link lgamma)
 AC_CHECK_FUNCS(localtime lstat mallinfo)
 AC_CHECK_FUNCS(mbsnrtowcs)
 AC_CHECK_FUNCS(memcpy memmove mkstemp mktemp)