From d5d7175691ea3cde7aa941886e3197763c1398c6 Mon Sep 17 00:00:00 2001
From: Max Horn
Date: Thu, 22 Jan 2009 06:41:57 +0000
Subject: Speed up HQ2x/HQ3x C versions by reordering tests in diffYUV: most
 likeliest to be taken now is first, least likely is last

svn-id: r35996
---
 graphics/scaler/intern.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'graphics')

diff --git a/graphics/scaler/intern.h b/graphics/scaler/intern.h
index 6fc0d6919b..5955aa1bac 100644
--- a/graphics/scaler/intern.h
+++ b/graphics/scaler/intern.h
@@ -115,11 +115,6 @@ static inline bool diffYUV(int yuv1, int yuv2) {
 	int diff;
 	int mask;
 
-	diff = ((yuv1 & Ymask) - (yuv2 & Ymask));
-	mask = diff >> 31; // -1 if value < 0, 0 otherwise
-	diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value
-	if (diff > trY) return true;
-
 	diff = ((yuv1 & Umask) - (yuv2 & Umask));
 	mask = diff >> 31; // -1 if value < 0, 0 otherwise
 	diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value
@@ -130,6 +125,11 @@ static inline bool diffYUV(int yuv1, int yuv2) {
 	diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value
 	if (diff > trV) return true;
 
+	diff = ((yuv1 & Ymask) - (yuv2 & Ymask));
+	mask = diff >> 31; // -1 if value < 0, 0 otherwise
+	diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value
+	if (diff > trY) return true;
+
 	return false;
 /*
 	return
-- 
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