From 330679c11a911f38ee6da83d9bdc4f0b5292d561 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sun, 3 Jan 1999 05:30:47 +0000
Subject: [PATCH] Fix NAN code.

---
 src/backend/utils/adt/numeric.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/src/backend/utils/adt/numeric.c b/src/backend/utils/adt/numeric.c
index 5481586571..0f8f5ce9a8 100644
--- a/src/backend/utils/adt/numeric.c
+++ b/src/backend/utils/adt/numeric.c
@@ -16,7 +16,6 @@
 #include <ctype.h>
 #include <float.h>
 #include <math.h>
-/*#include <nan.h> BSD/OS does not have this */
 #include <errno.h>
 #include <sys/types.h>
 
@@ -48,6 +47,9 @@
 #  define MAX(a,b) (((a)>(b)) ? (a) : (b))
 #endif
 
+#ifndef NAN
+#define NAN		(0.0/0.0)
+#endif
 
 
 /* ----------
@@ -1722,14 +1724,8 @@ numeric_float8(Numeric num)
 
 	if (NUMERIC_IS_NAN(num))
 	{
-		float64 dummy = 1;
-		
 		result = (float64)palloc(sizeof(float64data));
-#ifdef NAN
 		*result = NAN;
-#else
-		*result = (dummy-dummy)/(dummy-dummy); /* generate NAN */
-#endif
 		return result;
 	}
 
@@ -1778,14 +1774,8 @@ numeric_float4(Numeric num)
 
 	if (NUMERIC_IS_NAN(num))
 	{
-		float32 dummy = 1;
-		
 		result = (float32)palloc(sizeof(float32data));
-#ifdef NAN
 		*result = NAN;
-#else
-		*result = (dummy-dummy)/(dummy-dummy); /* generate NAN */
-#endif
 		return result;
 	}
 
-- 
2.39.5