github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-14 18:48:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

ADD 'lf nexawatch' by marshmellow42

Browse source 
ADD 'lf securakey'  by marshmellow42
ADD 'lf pac'  by marshmellow42
chg: parity.h got some love from pm3 master.
This commit is contained in:
iceman1001 2017-07-14 15:51:12 +02:00
commit d2f79fa83f
12 changed files with 444 additions and 58 deletions
Download patch file Download diff file Expand all files Collapse all files

39
common/parity.h
View file

@ -3,9 +3,11 @@
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Generic CRC calculation code.
// Parity functions
//-----------------------------------------------------------------------------
// all functions defined in header file by purpose. Allows compiler optimizations.
#ifndef __PARITY_H
#define __PARITY_H
@ -14,25 +16,42 @@ extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
extern const uint8_t OddByteParity[256];
extern const uint8_t EvenByteParity[256];
static inline uint8_t oddparity8(uint8_t bt)
{
return OddByteParity[bt];
static inline bool oddparity8(const uint8_t x) {
return OddByteParity[x];
}
static inline uint8_t evenparity8(const uint8_t bt)
{
return EvenByteParity[bt];
static inline bool evenparity8(const uint8_t x) {
return !OddByteParity[x];
}
static inline uint8_t evenparity32(uint32_t x)
static inline bool evenparity32(uint32_t x)
{
#if !defined __GNUC__
x ^= x >> 16;
x ^= x >> 8;
return EvenByteParity[x & 0xff];
return evenparity8(x);
#else
return __builtin_parity(x);
#endif
}
static inline bool oddparity32(uint32_t x)
{
#if !defined __GNUC__
x ^= x >> 16;
x ^= x >> 8;
return oddparity8(x);
#else
return !__builtin_parity(x);
#endif
}
#ifdef __cplusplus