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#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "longlong.h"
#ifndef USG
#include <sys/time.h>
#include <sys/resource.h>
unsigned long
cputime ()
{
struct rusage rus;
getrusage (0, &rus);
return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
}
#else
#include <time.h>
#ifndef CLOCKS_PER_SEC
#define CLOCKS_PER_SEC 1000000
#endif
#if CLOCKS_PER_SEC >= 10000
#define CLOCK_TO_MILLISEC(cl) ((cl) / (CLOCKS_PER_SEC / 1000))
#else
#define CLOCK_TO_MILLISEC(cl) ((cl) * 1000 / CLOCKS_PER_SEC)
#endif
unsigned long
cputime ()
{
return CLOCK_TO_MILLISEC (clock ());
}
#endif
#define M * 1000000
#ifndef CLOCK
#if defined (__m88k__)
#define CLOCK 20 M
#elif defined (__i386__)
#define CLOCK (16.666667 M)
#elif defined (__m68k__)
#define CLOCK (20 M)
#elif defined (_IBMR2)
#define CLOCK (25 M)
#elif defined (__sparc__)
#define CLOCK (20 M)
#elif defined (__sun__)
#define CLOCK (20 M)
#elif defined (__mips)
#define CLOCK (40 M)
#elif defined (__hppa__)
#define CLOCK (50 M)
#elif defined (__alpha)
#define CLOCK (133 M)
#else
#error "Don't know CLOCK of your machine"
#endif
#endif
#ifndef OPS
#define OPS 10000000
#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++)
{
#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;
#ifdef PRINT
mpn_print (s1, size);
#endif
t0 = cputime();
for (i = 0; i < TIMES; i++)
cyx = refmpn_rshift (dx+1, s1, size, cnt);
t = cputime() - t0;
#if TIMES != 1
printf ("refmpn_rshift: %5ldms (%.2f cycles/limb)\n",
t,
((double) t * CLOCK) / (OPS * 1000.0));
#endif
#ifdef PRINT
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx); mpn_print (dx+1, size);
#endif
t0 = cputime();
for (i = 0; i < TIMES; i++)
cyy = mpn_rshift (dx+1, s1, size, cnt);
t = cputime() - t0;
#if TIMES != 1
printf ("mpn_rshift: %5ldms (%.2f cycles/limb)\n",
t,
((double) t * CLOCK) / (OPS * 1000.0));
#endif
#ifdef PRINT
printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy); mpn_print (dx+1, size);
#endif
#ifndef NOCHECK
/* Put garbage in the destination. */
for (i = 1; i <= size; i++)
{
dx[i] = 0x7654321;
dy[i] = 0x1234567;
}
cyx = refmpn_rshift (dx+1, s1, size, cnt);
cyy = mpn_rshift (dy+1, s1, size, cnt);
if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
|| dx[size+1] != 0x12345678 || dx[0] != 0x87654321)
{
#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
abort();
}
#endif
}
}
mpn_print (mp_ptr p, mp_size_t size)
{
mp_size_t i;
for (i = size - 1; i >= 0; i--)
{
printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
#ifdef SPACE
if (i != 0)
printf (" ");
#endif
}
puts ("");
}
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