From e91e9e7bbf1d93cdff89878b776a7824a9bc2d99 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 20 Dec 2003 15:45:15 +0000
Subject: * eval.c (rb_with_disable_interrupt): prohibit thread context  
 switch during proc execution.  [ruby-dev:21899]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5232 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 missing/isinf.c | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

(limited to 'missing/isinf.c')

diff --git a/missing/isinf.c b/missing/isinf.c
index 38772ba4f1..1b09f11f19 100644
--- a/missing/isinf.c
+++ b/missing/isinf.c
@@ -9,16 +9,33 @@ int
 isinf(n)
     double n;
 {
-        if (IsNANorINF(n) && IsINF(n)) {
-                return 1;
-        } else {
-                return 0;
-        }
+    if (IsNANorINF(n) && IsINF(n)) {
+	return 1;
+    }
+    else {
+	return 0;
+    }
 }
 
 #else
 
 #include "config.h"
+
+#if defined(HAVE_FINITE) && defined(HAVE_ISNAN)
+
+#ifdef HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+
+int
+isinf(n)
+    double n;
+{
+    return (!finite(x) && !isnan(x))
+}
+
+#else
+
 #ifdef HAVE_STRING_H
 # include <string.h>
 #else
@@ -44,3 +61,4 @@ isinf(n)
 	|| memcmp(&n, &ninf, sizeof n) == 0;
 }
 #endif
+#endif
-- 
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