1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * %sccs.include.redist.c% 10 */ 11 12 #ifndef lint 13 char copyright[] = 14 "@(#) Copyright (c) 1992 The Regents of the University of California.\n\ 15 All rights reserved.\n"; 16 #endif /* not lint */ 17 18 #ifndef lint 19 static char sccsid[] = "@(#)divrem.c 5.1 (Berkeley) 06/02/92"; 20 #endif /* not lint */ 21 22 #include <stdio.h> 23 24 main() 25 { 26 union { long long q; unsigned long v[2]; } a, b, q, r; 27 char buf[300]; 28 extern long long __qdivrem(unsigned long long, unsigned long long, 29 unsigned long long *); 30 31 for (;;) { 32 printf("> "); 33 if (fgets(buf, sizeof buf, stdin) == NULL) 34 break; 35 if (sscanf(buf, "%lu:%lu %lu:%lu", 36 &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 && 37 sscanf(buf, "0x%lx:%lx 0x%lx:%lx", 38 &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) { 39 printf("eh?\n"); 40 continue; 41 } 42 q.q = __qdivrem(a.q, b.q, &r.q); 43 printf("%lx:%lx /%% %lx:%lx => q=%lx:%lx r=%lx:%lx\n", 44 a.v[0], a.v[1], b.v[0], b.v[1], 45 q.v[0], q.v[1], r.v[0], r.v[1]); 46 printf(" = %lX%08lX / %lX%08lX => %lX%08lX\n\ 47 = %lX%08lX %% %lX%08lX => %lX%08lX\n", 48 a.v[0], a.v[1], b.v[0], b.v[1], q.v[0], q.v[1], 49 a.v[0], a.v[1], b.v[0], b.v[1], r.v[0], r.v[1]); 50 } 51 exit(0); 52 } 53