From 9788418026d3db107a953bdeea2a8d330efc5eea Mon Sep 17 00:00:00 2001
From: leitner <leitner>
Date: Thu, 18 Oct 2007 11:51:17 +0000
Subject: [PATCH] slight optimization

---
 scan/scan_fromhex.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scan/scan_fromhex.c b/scan/scan_fromhex.c
index 7da5c93..62fdfa7 100644
--- a/scan/scan_fromhex.c
+++ b/scan/scan_fromhex.c
@@ -1,6 +1,13 @@
 #include "scan.h"
 
 int scan_fromhex(unsigned char c) {
+  c-='0';
+  if (c<=9) return c;
+  c&=~0x20;
+  c-='A'-'0';
+  if (c<6) return c+10;
+  return -1;
+/* more readable but creates worse code:
   if (c>='0' && c<='9')
     return c-'0';
   else if (c>='A' && c<='F')
@@ -8,5 +15,6 @@ int scan_fromhex(unsigned char c) {
   else if (c>='a' && c<='f')
     return c-'a'+10;
   return -1;
+*/
 }