Determine endianness of system, based on: http://stackoverflow.com/questions/8571089/how-can-i-find-endian-ness-of-my-pc-programmatically-using-c

whatendianness.c

/* Based on: http://stackoverflow.com/questions/8571089/how-can-i-find-endian-ness-of-my-pc-programmatically-using-c
 *
 * Build: gcc -o whatendianness whatendianness.c
 *
 */

# include <stdio.h>

int main (int argc, char **argv) {
  int num = 1;

  if (*(char *) &num == 1) {

    printf ("Endianness: Little-endian\n");

    return 0;

  } else {

    printf ("Endianness: Big-endian\n");

    return 1;
  }
}