utils/buildbfendian.c

   1 #include <stdio.h>
   2 #include <stdint.h>
   3
   4 int main(void)
   5 {
   6         union {
   7                 struct {
   8                         uint8_t a:4;
   9                         uint8_t b:4;
  10                 };
  11
  12                 uint8_t c;
  13         } u;
  14
  15         u.c = 0xa5;
  16
  17         if (u.a == 0xa && u.b == 0x5)
  18                 printf("BE");
  19         else if (u.a == 0x5 && u.b == 0xa)
  20                 printf("LE");
  21         else
  22                 printf("UNKNOWN");
  23
  24         return 0;
  25 }