git.defcon.no Git - hm-trp-tool/blob - swap.c_example

   1 #include <bits/byteswap.h> /* __bwap_{16,32} */
   2
   3 /*
   4   Basically, does:
   5 uint32_t swap_uint32 ( uint32_t num )
   6 {
   7         return  ( (num>>24) & 0x000000ff) |    // move byte 3 to byte 0
   8                 ( (num<<8)  & 0x00ff0000) |   // move byte 1 to byte 2
   9                 ( (num>>8)  & 0x0000ff00) |     // move byte 2 to byte 1
  10                 ( (num<<24) & 0xff000000); // byte 0 to byte 3
  11 }
  12
  13 uint16_t swap_uint16 ( uint16_t num )
  14 {
  15         //          Move UP and mask    | Move DOWN and mask
  16         return( (num<<8) & 0xff00 ) | ( (num>>8) & 0x00ff );
  17 }
  18 */
  19