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ntp 4.2.6p5

    1: /*
    2:  * This works on:
    3:  *   Crays
    4:  *   Conven
    5:  *   sparc's
    6:  *   Dec mip machines
    7:  *   Dec alpha machines
    8:  *   RS6000
    9:  *   SGI's
   10:  */
   11: 
   12: #include <stdio.h>
   13: 
   14: int
   15: main(
   16: 	int argc,
   17: 	char *argv[]
   18: 	)
   19: {
   20: 	int i;
   21: 	int big;
   22: 	union {
   23: 		unsigned long l;
   24: 		char c[sizeof(long)];
   25: 	} u;
   26: 
   27: #if defined(LONG8)
   28: 	u.l = (((long)0x08070605) << 32) | (long)0x04030201;
   29: #else
   30: 	u.l = 0x04030201;
   31: #endif
   32: 	if (sizeof(long) > 4) {
   33: 		if (u.c[0] == 0x08) big = 1;
   34: 		else		    big = 0;
   35: 	} else {
   36: 		if (u.c[0] == 0x04) big = 1;
   37: 		else		    big = 0;
   38: 	}
   39: 	for (i=0; i< sizeof(long); i++) {
   40: 		if (big == 1 && (u.c[i] == (sizeof(long) - i))) { 
   41: 			continue; 
   42: 		} else if (big == 0 && (u.c[i] == (i+1))) {
   43: 			continue;
   44: 		} else {
   45: 			big = -1;
   46: 			break;
   47: 		}
   48: 	}
   49: 
   50: 	if (big == 1) {
   51: 		printf("XNTP_BIG_ENDIAN\n");
   52: 	} else if (big == 0) {
   53: 		printf("XNTP_LITTLE_ENDIAN\n");
   54: 	}
   55: 	exit(0);
   56: }