#include <stdlib.h>
main () {
    /* Are we little or big endian?  Originally from Harbison and Steele. */
    union
    {
	long l;
	char c[sizeof(long)];
    } u;
    u.l = 1;
    exit (u.c[sizeof(long)-1] == 1);
    /* Return 0 (success) if we're little-endian, or 1 (fail) if big-endian */
}