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Use limits.h for INT, SHRT, and SCHAR min and max values rather than 

hardcoded values.
This commit is contained in:
Thomas G. Lockhart 1997-11-17 16:26:27 +00:00
parent 174f984b76
commit 2fa330284c
1 changed files with 29 additions and 7 deletions
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36
src/backend/utils/adt/numutils.c
View File

@ -10,13 +10,16 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/numutils.c,v 1.16 1997/09/18 20:22:15 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/numutils.c,v 1.17 1997/11/17 16:26:27 thomas Exp $
*
*-------------------------------------------------------------------------
*/
#include <stdio.h> /* for sprintf() */
#include <errno.h>
#include <math.h>
#ifdef HAVE_LIMITS
#include <limits.h>
#endif
#include "postgres.h"
#include "utils/builtins.h" /* where the declarations go */
#ifndef HAVE_MEMMOVE
@ -26,6 +29,25 @@
#endif
#include <port-protos.h> /* ecvt(), fcvt() */
#ifndef INT_MAX
#define INT_MAX (0x7FFFFFFFL)
#endif
#ifndef INT_MIN
#define INT_MIN (-0x80000000L)
#endif
#ifndef SHRT_MAX
#define SHRT_MAX (0x7FFF)
#endif
#ifndef SHRT_MIN
#define SHRT_MIN (-0x8000)
#endif
#ifndef SCHAR_MAX
#define SCHAR_MAX (0x7F)
#endif
#ifndef SCHAR_MIN
#define SCHAR_MIN (-0x80)
#endif
int32
pg_atoi(char *s, int size, int c)
{
@ -46,12 +68,12 @@ pg_atoi(char *s, int size, int c)
case sizeof(int32):
#ifdef HAS_LONG_LONG
/* won't get ERANGE on these with 64-bit longs... */
if (l < -0x80000000L)
if (l < INT_MIN)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);
}
if (l > 0x7fffffffL)
if (l > INT_MAX)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);
@ -59,24 +81,24 @@ pg_atoi(char *s, int size, int c)
#endif /* HAS_LONG_LONG */
break;
case sizeof(int16):
if (l < -0x8000)
if (l < SHRT_MIN)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);
}
if (l > 0x7fff)
if (l > SHRT_MAX)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);
}
break;
case sizeof(int8):
if (l < -0x80)
if (l < SCHAR_MIN)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);
}
if (l > 0x7f)
if (l > SCHAR_MAX)
{
errno = ERANGE;
elog(WARN, "pg_atoi: error reading \"%s\": %m", s);