From 7badb1e792acfadec6e86214ca1292e8465b7f97 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sun, 18 Jul 1999 20:43:13 +0000
Subject: Fix configure problem.

---
 src/backend/port/isinf.c | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to 'src/backend/port/isinf.c')

diff --git a/src/backend/port/isinf.c b/src/backend/port/isinf.c
index 1fa31f82634..e2193267073 100644
--- a/src/backend/port/isinf.c
+++ b/src/backend/port/isinf.c
@@ -1,18 +1,12 @@
-/* $Id: isinf.c,v 1.10 1999/07/18 17:38:23 momjian Exp $ */
+/* $Id: isinf.c,v 1.11 1999/07/18 20:43:12 momjian Exp $ */
 
 #include <math.h>
-
 #include "config.h"
 
-#ifdef NOT_USED
-
+#if HAVE_FPCLASS
 #if HAVE_IEEEFP_H
 #include <ieeefp.h>
 #endif
-#if HAVE_FP_CLASS_H
-#include <fp_class.h>
-#endif
-
 int
 isinf(double d)
 {
@@ -29,6 +23,12 @@ isinf(double d)
 	return 0;
 }
 
+#else
+
+#if defined(HAVE_FP_CLASS) || defined(HAVE_FP_CLASS_D)
+#if HAVE_FP_CLASS_H
+#include <fp_class.h>
+#endif
 int
 isinf(x)
 double		x;
@@ -49,3 +49,19 @@ double		x;
 }
 
 #endif
+#endif
+
+#if defined(HAVE_CLASS)
+int
+isinf(double x)
+{
+	int			fpclass = class(x);
+
+	if (fpclass == FP_PLUS_INF)
+		return 1;
+	if (fpclass == FP_MINUS_INF)
+		return -1;
+	return 0;
+}
+
+#endif
-- 
cgit v1.2.3