linux-kernel - [PATCH v2 4/7] vsprintf: use TOLOWER whenever possible

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Date:	Mon, 2 Nov 2009 15:26:30 -0200
From:	André Goddard Rosa <andre.goddard@...il.com>
To:	Frederic Weisbecker <fweisbec@...il.com>, laijs@...fujitsu.com,
	mingo@...e.hu, davem@...emloft.net, akpm@...ux-foundation.org,
	harvey.harrison@...il.com,
	linux list <linux-kernel@...r.kernel.org>
Cc:	me <andre.goddard@...il.com>
Subject: [PATCH v2 4/7] vsprintf: use TOLOWER whenever possible

>From a9098d7fdff2c3f382f3933591f67e36ca049472 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Goddard=20Rosa?= <andre.goddard@...il.com>
Date: Sun, 1 Nov 2009 13:42:32 -0200
Subject: [PATCH v2 4/7] vsprintf: use TOLOWER whenever possible
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

It decreases code size as well:
   text    data     bss     dec     hex filename
  15767       0       8   15775    3d9f lib/vsprintf.o-before
  15735       0       8   15743    3d7f lib/vsprintf.o-TOLOWER

Signed-off-by: André Goddard Rosa <andre.goddard@...il.com>
---
 lib/vsprintf.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 00153c5..14e4197 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -983,8 +983,8 @@ precision:
 qualifier:
 	/* get the conversion qualifier */
 	spec->qualifier = -1;
-	if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
-	    *fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
+	if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
+	    TOLOWER(*fmt) == 'z' || *fmt == 't') {
 		spec->qualifier = *fmt++;
 		if (unlikely(spec->qualifier == *fmt)) {
 			if (spec->qualifier == 'l') {
@@ -1051,7 +1051,7 @@ qualifier:
 			spec->type = FORMAT_TYPE_LONG;
 		else
 			spec->type = FORMAT_TYPE_ULONG;
-	} else if (spec->qualifier == 'Z' || spec->qualifier == 'z') {
+	} else if (TOLOWER(spec->qualifier) == 'z') {
 		spec->type = FORMAT_TYPE_SIZE_T;
 	} else if (spec->qualifier == 't') {
 		spec->type = FORMAT_TYPE_PTRDIFF;
@@ -1198,8 +1198,7 @@ int vsnprintf(char *buf, size_t size, const char
*fmt, va_list args)
 			if (qualifier == 'l') {
 				long *ip = va_arg(args, long *);
 				*ip = (str - buf);
-			} else if (qualifier == 'Z' ||
-					qualifier == 'z') {
+			} else if (TOLOWER(qualifier) == 'z') {
 				size_t *ip = va_arg(args, size_t *);
 				*ip = (str - buf);
 			} else {
@@ -1490,7 +1489,7 @@ do {									\
 			void *skip_arg;
 			if (qualifier == 'l')
 				skip_arg = va_arg(args, long *);
-			else if (qualifier == 'Z' || qualifier == 'z')
+			else if (TOLOWER(qualifier) == 'z')
 				skip_arg = va_arg(args, size_t *);
 			else
 				skip_arg = va_arg(args, int *);
@@ -1801,8 +1800,8 @@ int vsscanf(const char *buf, const char *fmt,
va_list args)

 		/* get conversion qualifier */
 		qualifier = -1;
-		if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
-		    *fmt == 'Z' || *fmt == 'z') {
+		if (*fmt == 'h' || TOLOWER(*fmt) == 'l' ||
+		    TOLOWER(*fmt) == 'z') {
 			qualifier = *fmt++;
 			if (unlikely(qualifier == *fmt)) {
 				if (qualifier == 'h') {
-- 
1.6.5.2.140.g5f809
--
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