From c715788681121b78af3046d5c039c751625c8ad9 Mon Sep 17 00:00:00 2001
From: "Thomas G. Lockhart" <lockhart@fourpalms.org>
Date: Sun, 10 Jan 1999 17:13:06 +0000
Subject: [PATCH] Handle "NaN" and "Infinity" for input values. I think NAN is
already guaranteed to be there from Jan's work on NUMERIC, but perhaps
HUGE_VAL needs some #ifndef's in the same place. Should also include
"-Infinity" as -HUGE_VAL sometime; not there yet.
---
src/backend/utils/adt/float.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c
index a00cef1bf19..ba6abbb247c 100644
--- a/src/backend/utils/adt/float.c
+++ b/src/backend/utils/adt/float.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.35 1998/11/29 01:57:59 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.36 1999/01/10 17:13:06 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -249,8 +249,17 @@ float8in(char *num)
errno = 0;
val = strtod(num, &endptr);
- if (*endptr != '\0' || errno == ERANGE)
- elog(ERROR, "Bad float8 input format '%s'", num);
+ if (*endptr != '\0')
+ {
+ if (strcasecmp(num, "NaN") == 0)
+ val = NAN;
+ else if (strcasecmp(num, "Infinity") == 0)
+ val = HUGE_VAL;
+ else if (errno == ERANGE)
+ elog(ERROR, "Input '%s' is out of range for float8", num);
+ else
+ elog(ERROR, "Bad float8 input format '%s'", num);
+ }
CheckFloat8Val(val);
*result = val;
--
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