introduce LONE_CHAR (optimized strcmp with one-char string)

2006-12-21 13:23:14 +00:00
parent 6910741067
commit bf66fbc8e2
17 changed files with 49 additions and 35 deletions
--- a/coreutils/expr.c
+++ b/coreutils/expr.c
@ -136,7 +136,7 @@ static int null(VALUE * v)
 	if (v->type == integer)
 		return v->u.i == 0;
 	else				/* string: */
-		return v->u.s[0] == '\0' || strcmp(v->u.s, "0") == 0;
+		return v->u.s[0] == '\0' || LONE_CHAR(v->u.s, '0');
 }

 /* Coerce V to a string value (can't fail).  */