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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 20000000
#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_addmul_1 (res_ptr, s1_ptr, s1_size, s2_limb)
register mp_ptr res_ptr;
register mp_srcptr s1_ptr;
mp_size_t s1_size;
register mp_limb_t s2_limb;
{
register mp_limb_t cy_limb;
register mp_size_t j;
register mp_limb_t prod_high, prod_low;
register mp_limb_t x;
/* The loop counter and index J goes from -SIZE to -1. This way
the loop becomes faster. */
j = -s1_size;
/* Offset the base pointers to compensate for the negative indices. */
res_ptr -= j;
s1_ptr -= j;
cy_limb = 0;
do
{
umul_ppmm (prod_high, prod_low, s1_ptr[j], s2_limb);
prod_low += cy_limb;
cy_limb = (prod_low < cy_limb) + prod_high;
x = res_ptr[j];
prod_low = x + prod_low;
cy_limb += (prod_low < x);
res_ptr[j] = prod_low;
}
while (++j != 0);
return cy_limb;
}
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;
mp_limb_t xlimb;
mp_size_t size;
double cyc;
for (test = 0; ; test++)
{
#ifdef RANDOM
size = (random () % SIZE + 1);
#else
size = SIZE;
#endif
mpn_random2 (s1, size);
mpn_random2 (dy+1, size);
if (random () % 0x100 == 0)
xlimb = 0;
else
mpn_random2 (&xlimb, 1);
dy[size+1] = 0x12345678;
dy[0] = 0x87654321;
#if defined (PRINT) || defined (XPRINT)
printf ("xlimb=%*lX\n", (int) (2 * sizeof(mp_limb_t)), xlimb);
#endif
#ifdef PRINT
mpn_print (dy+1, size);
mpn_print (s1, size);
#endif
MPN_COPY (dx, dy, size+2);
t0 = cputime();
for (i = 0; i < TIMES; i++)
cyx = refmpn_addmul_1 (dx+1, s1, size, xlimb);
t = cputime() - t0;
#if TIMES != 1
cyc = ((double) t * CLOCK) / (OPS * 1000.0);
printf ("refmpn_addmul_1: %5ldms (%.2f cycles/limb) [%.2f Gb/s]\n",
t,
cyc,
CLOCK/cyc*BITS_PER_MP_LIMB*BITS_PER_MP_LIMB);
#endif
MPN_COPY (dx, dy, size+2);
t0 = cputime();
for (i = 0; i < TIMES; i++)
cyy = mpn_addmul_1 (dx+1, s1, size, xlimb);
t = cputime() - t0;
#if TIMES != 1
cyc = ((double) t * CLOCK) / (OPS * 1000.0);
printf ("mpn_addmul_1: %5ldms (%.2f cycles/limb) [%.2f Gb/s]\n",
t,
cyc,
CLOCK/cyc*BITS_PER_MP_LIMB*BITS_PER_MP_LIMB);
#endif
MPN_COPY (dx, dy, size+2);
cyx = refmpn_addmul_1 (dx+1, s1, size, xlimb);
cyy = mpn_addmul_1 (dy+1, s1, size, xlimb);
#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
#ifndef NOCHECK
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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