b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/* $NetBSD: mul.c,v 1.4 2003/08/07 16:43:19 agc Exp $ */
|
|
|
|
/*-
|
|
* 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. 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
|
|
#if 0
|
|
static char sccsid[] = "@(#)mul.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
static char rcsid[] = "$NetBSD: mul.c,v 1.4 2003/08/07 16:43:19 agc Exp $";
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <stdio.h>
|
|
|
|
main()
|
|
{
|
|
union { long long q; unsigned int 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, "%u:%u %u:%u",
|
|
&a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 &&
|
|
sscanf(buf, "0x%x:%x 0x%x:%x",
|
|
&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("%x:%x * %x:%x => %x:%x\n",
|
|
a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
|
|
printf(" = %X%08X * %X%08X => %X%08X\n",
|
|
a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
|
|
}
|
|
exit(0);
|
|
}
|