serval-dna/nacl/nacl-20110221/curvecp/byte_isequal.c
Daniel O'Connor bf9710fd5a Unpacked nacl-20110221 after processing by nacl-prepare-sources.
This only affects build_android, if nacl-gcc-prep is run then build/`uname -s` will be created.
2012-02-27 12:40:14 +10:30

11 lines
271 B
C

#include "byte.h"
int byte_isequal(const void *yv,long long ylen,const void *xv)
{
const unsigned char *y = yv;
const unsigned char *x = xv;
unsigned char diff = 0;
while (ylen > 0) { diff |= (*y++ ^ *x++); --ylen; }
return (256 - (unsigned int) diff) >> 8;
}