Patch from Hiroshi for overflow btree comparison.

bmomjian · bmomjian · commit 1380921e653a · 2000-01-28T17:23:47.000Z
diff --git a/doc/TODO b/doc/TODO
@@ -1,6 +1,6 @@
 TODO list for PostgreSQL
 ========================
-Last updated:		Thu Jan 27 23:46:41 EST 2000
+Last updated:		Thu Jan 27 23:55:43 EST 2000
 
 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
 
diff --git a/src/backend/access/nbtree/nbtcompare.c b/src/backend/access/nbtree/nbtcompare.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.31 2000/01/26 05:55:58 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.32 2000/01/28 17:23:47 momjian Exp $
  *
  *	NOTES
  *		These functions are stored in pg_amproc.  For each operator class
@@ -35,7 +35,12 @@ btint2cmp(int16 a, int16 b)
 int32
 btint4cmp(int32 a, int32 b)
 {
-	return a - b;
+      if (a > b)
+              return 1;
+      else if (a == b)
+              return 0;
+      else
+              return -1;
 }
 
 int32

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.31 2000/01/26 05:55:58 momjian Exp $`
	`11`	`+ * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.32 2000/01/28 17:23:47 momjian Exp $`
`12`	`12`	`*`
`13`	`13`	`* NOTES`
`14`	`14`	`* These functions are stored in pg_amproc. For each operator class`
`@@ -35,7 +35,12 @@ btint2cmp(int16 a, int16 b)`
`35`	`35`	`int32`
`36`	`36`	`btint4cmp(int32 a, int32 b)`
`37`	`37`	`{`
`38`		`- return a - b;`
	`38`	`+ if (a > b)`
	`39`	`+ return 1;`
	`40`	`+ else if (a == b)`
	`41`	`+ return 0;`
	`42`	`+ else`
	`43`	`+ return -1;`
`39`	`44`	`}`
`40`	`45`
`41`	`46`	`int32`