From f4bbbc82b97201e01b30fc2e56e1e2bf596f916f Mon Sep 17 00:00:00 2001
From: christos <christos@NetBSD.org>
Date: Wed, 22 Mar 2006 05:03:10 +0000
Subject: Simplify (Masao Uebayashi)

---
 atc/update.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'atc')

diff --git a/atc/update.c b/atc/update.c
index 7b7a3eda..dafa74e7 100644
--- a/atc/update.c
+++ b/atc/update.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: update.c,v 1.15 2006/03/22 04:24:14 christos Exp $	*/
+/*	$NetBSD: update.c,v 1.16 2006/03/22 05:03:10 christos Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -46,7 +46,7 @@
 #if 0
 static char sccsid[] = "@(#)update.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: update.c,v 1.15 2006/03/22 04:24:14 christos Exp $");
+__RCSID("$NetBSD: update.c,v 1.16 2006/03/22 05:03:10 christos Exp $");
 #endif
 #endif /* not lint */
 
@@ -260,12 +260,12 @@ name(const PLANE *p)
 int
 number(int l)
 {
-	if ((l < 'a' && l > 'z') || (l < 'A' && l > 'Z'))
-		return (-1);
-	else if (l >= 'a' && l <= 'z')
+	if (islower((unsigned char)l)
 		return (l - 'a');
-	else 
+	else if (isupper((unsigned char)l)
 		return (l - 'A');
+	else
+		return (-1);
 }
 
 int
-- 
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