#include "unp.h" int main(int argc, char **argv) { union { short s; char c[sizeof(short)]; } un; un.s = 0x0102; printf("%s: ", CPU_VENDOR_OS); if (sizeof(short) == 2) { if (un.c[0] == 1 && un.c[1] == 2) printf("big-endian\n"); else if (un.c[0] == 2 && un.c[1] == 1) printf("little-endian\n"); else printf("unknown\n"); } else printf("sizeof(short) = %d\n", sizeof(short)); exit(0); }