reactos/lib/cryptlib/util.c

   1
   2
   3 #if !defined(_MSC_VER) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
   4 #include <stdlib.h>
   5 #include <intrin.h>
   6
   7 void
   8 byteReverse(unsigned char *buf, unsigned longs)
   9 {
  10     unsigned int t;
  11
  12     do
  13     {
  14 #if 0
  15         t = (unsigned int)((unsigned)buf[3] << 8 | buf[2]) << 16 |
  16             ((unsigned)buf[1] << 8 | buf[0]);
  17 #else
  18         t = _byteswap_ulong(*(unsigned int *)buf);
  19 #endif
  20         *(unsigned int *)buf = t;
  21         buf += 4;
  22     } while (--longs);
  23 }
  24
  25 #endif // !defined(_MSC_VER) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
  26