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slight optimization

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This commit is contained in:
leitner 2007-10-18 11:51:17 +00:00
parent 34c8462dea
commit 9788418026
1 changed files with 8 additions and 0 deletions
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8
scan/scan_fromhex.c
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@ -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;
*/
}