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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char rcsid[] = "$OpenBSD: mul.c,v 1.2 1996/08/19 08:30:58 tholo Exp $";
#endif /* not lint */
#include <stdio.h>
main()
{
union { long long q; unsigned long v[2]; } a, b, m;
char buf[300];
extern long long __muldi3(long long, long long);
for (;;) {
printf("> ");
if (fgets(buf, sizeof buf, stdin) == NULL)
break;
if (sscanf(buf, "%lu:%lu %lu:%lu",
&a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 &&
sscanf(buf, "0x%lx:%lx 0x%lx:%lx",
&a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) {
printf("eh?\n");
continue;
}
m.q = __muldi3(a.q, b.q);
printf("%lx:%lx * %lx:%lx => %lx:%lx\n",
a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
printf(" = %lX%08lX * %lX%08lX => %lX%08lX\n",
a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
}
exit(0);
}
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