cryb.to/cryb-to
1
0
Fork 0
mirror of https://github.com/cryb-to/cryb-to.git synced 2024-12-18 02:24:54 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge pull request #7 from cryb-to/safe-rol-ror

Browse source 
Make rolN / rorN safe for all counts.
This commit is contained in:
Dag-Erling Smørgrav 2017-04-06 21:14:55 +02:00 committed by GitHub
commit ae9609ddf0
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
include/cryb/bitwise.h
View file

@ -1,6 +1,6 @@
/*-
* Copyright (c) 2012 The University of Oslo
* Copyright (c) 2012-2016 Dag-Erling Smørgrav
* Copyright (c) 2012-2017 Dag-Erling Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -40,11 +40,11 @@ CRYB_BEGIN
#define CRYB_ROL_ROR(N) \
static inline uint##N##_t rol##N(uint##N##_t i, int n) \
{ \
return (i << n | i >> (N - n)); \
return (i << (n & (N - 1)) | i >> (-n & (N - 1))); \
} \
static inline uint##N##_t ror##N(uint##N##_t i, int n) \
{ \
return (i << (N - n) | i >> n); \
return (i << (-n & (N - 1)) | i >> (n & (N - 1))); \
}
CRYB_ROL_ROR(8);