release/src/router/libsodium/src/libsodium/crypto_verify/16/ref/verify_16.c

   1 #include "api.h"
   2
   3 int crypto_verify_16(const unsigned char *x,const unsigned char *y)
   4 {
   5   unsigned int differentbits = 0;
   6 #define F(i) differentbits |= x[i] ^ y[i];
   7   F(0)
   8   F(1)
   9   F(2)
  10   F(3)
  11   F(4)
  12   F(5)
  13   F(6)
  14   F(7)
  15   F(8)
  16   F(9)
  17   F(10)
  18   F(11)
  19   F(12)
  20   F(13)
  21   F(14)
  22   F(15)
  23   return (1 & ((differentbits - 1) >> 8)) - 1;
  24 }