File: [local] / OpenXM_contrib / gmp / tests / devel / Attic / rshift.c (download)
Revision 1.1.1.1 (vendor branch), Mon Aug 25 16:06:12 2003 UTC (21 years ago) by ohara
Branch: GMP
CVS Tags: VERSION_4_1_2, RELEASE_1_2_3, RELEASE_1_2_2_KNOPPIX_b, RELEASE_1_2_2_KNOPPIX Changes since 1.1: +0 -0
lines
Import gmp 4.1.2
|
/*
Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
*/
#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
#if defined (USG) || defined (__SVR4) || defined (_UNICOS) || defined (__hpux)
#include <time.h>
int
cputime ()
{
if (CLOCKS_PER_SEC < 100000)
return clock () * 1000 / CLOCKS_PER_SEC;
return clock () / (CLOCKS_PER_SEC / 1000);
}
#else
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
int
cputime ()
{
struct rusage rus;
getrusage (0, &rus);
return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
}
#endif
#define M * 1000000
#ifndef CLOCK
#error "Don't know CLOCK of your machine"
#endif
#ifndef OPS
#define OPS (CLOCK/5)
#endif
#ifndef SIZE
#define SIZE 496
#endif
#ifndef TIMES
#define TIMES OPS/SIZE
#else
#undef OPS
#define OPS (SIZE*TIMES)
#endif
mp_limb_t
refmpn_rshift (wp, up, usize, cnt)
register mp_ptr wp;
register mp_srcptr up;
mp_size_t usize;
register unsigned int cnt;
{
register mp_limb_t high_limb, low_limb;
register unsigned sh_1, sh_2;
register mp_size_t i;
mp_limb_t retval;
#ifdef DEBUG
if (usize == 0 || cnt == 0)
abort ();
#endif
sh_1 = cnt;
#if 0
if (sh_1 == 0)
{
if (wp != up)
{
/* Copy from low end to high end, to allow specified input/output
overlapping. */
for (i = 0; i < usize; i++)
wp[i] = up[i];
}
return 0;
}
#endif
wp -= 1;
sh_2 = BITS_PER_MP_LIMB - sh_1;
high_limb = up[0];
retval = high_limb << sh_2;
low_limb = high_limb;
for (i = 1; i < usize; i++)
{
high_limb = up[i];
wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
low_limb = high_limb;
}
low_limb >>= sh_1;
wp[i] = low_limb;
return retval;
}
#ifndef CNT
#define CNT 4
#endif
main (argc, argv)
int argc;
char **argv;
{
mp_limb_t s1[SIZE];
mp_limb_t dx[SIZE+2];
mp_limb_t dy[SIZE+2];
mp_limb_t cyx, cyy;
int i;
long t0, t;
int test;
int cnt = CNT;
mp_size_t size;
for (test = 0; ; test++)
{
#if TIMES == 1 && ! defined (PRINT)
if (test % (SIZE > 10000 ? 1 : 10000 / SIZE) == 0)
{
printf ("\r%d", test);
fflush (stdout);
}
#endif
#if TIMES == 1
cnt = random () % (BITS_PER_MP_LIMB - 1) + 1;
#endif
#ifdef RANDOM
size = random () % SIZE + 1;
#else
size = SIZE;
#endif
mpn_random2 (s1, size);
dx[size+1] = 0x12345678;
dy[size+1] = 0x12345678;
dx[0] = 0x87654321;
dy[0] = 0x87654321;
#if TIMES != 1
mpn_random (s1, size);
#ifndef NOCHECK
t0 = cputime();
for (i = 0; i < TIMES; i++)
refmpn_rshift (dx+1, s1, size, cnt);
t = cputime() - t0;
printf ("refmpn_rshift: %5ldms (%.2f cycles/limb)\n",
t, ((double) t * CLOCK) / (OPS * 1000.0));
#endif
t0 = cputime();
for (i = 0; i < TIMES; i++)
mpn_rshift (dx+1, s1, size, cnt);
t = cputime() - t0;
printf ("mpn_rshift: %5ldms (%.2f cycles/limb)\n",
t, ((double) t * CLOCK) / (OPS * 1000.0));
#endif
#ifndef NOCHECK
mpn_random2 (s1, size);
#ifdef PRINT
printf ("%-*d ", (int) (2 * sizeof(mp_limb_t)), cnt); mpn_print (s1, size);
#endif
/* Put garbage in the destination. */
for (i = 0; i < size; i++)
{
dx[i+1] = 0xdead;
dy[i+1] = 0xbeef;
}
cyx = refmpn_rshift (dx+1, s1, size, cnt);
cyy = mpn_rshift (dy+1, s1, size, cnt);
#ifdef PRINT
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
mpn_print (dx+1, size);
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
mpn_print (dy+1, size);
#endif
if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
|| dx[0] != 0x87654321 || dx[size+1] != 0x12345678)
{
#ifndef PRINT
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
mpn_print (dx+1, size);
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
mpn_print (dy+1, size);
#endif
printf ("\n");
if (dy[0] != 0x87654321)
printf ("clobbered at low end\n");
if (dy[size+1] != 0x12345678)
printf ("clobbered at high end\n");
printf ("TEST NUMBER %u\n", test);
abort();
}
#endif
}
}
mpn_print (mp_ptr p, mp_size_t size)
{
mp_size_t i;
for (i = size - 1; i >= 0; i--)
{
#ifdef _LONG_LONG_LIMB
printf ("%0*lX%0*lX", (int) (sizeof(mp_limb_t)),
(unsigned long) (p[i] >> (BITS_PER_MP_LIMB/2)),
(int) (sizeof(mp_limb_t)), (unsigned long) (p[i]));
#else
printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
#endif
#ifdef SPACE
if (i != 0)
printf (" ");
#endif
}
puts ("");
}