freebsd-dev/contrib/libgmp/mpn/tests/divrem.c
Mark Murray aa9bc17601 Clean import of libgmp 2.0.2, with only the non-x86 bits removed.
BMakefiles and other bits will follow.

Requested by:	Andrey Chernov
Made world by:	Chuck Robey
1996-10-20 08:49:26 +00:00

130 lines
2.4 KiB
C

#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 100
#endif
#ifndef TIMES
#define TIMES OPS/SIZE
#else
#undef OPS
#define OPS (SIZE*TIMES)
#endif
main ()
{
mp_limb_t nptr[2 * SIZE];
mp_limb_t dptr[SIZE];
mp_limb_t qptr[2 * SIZE];
mp_limb_t pptr[2 * SIZE];
mp_limb_t rptr[2 * SIZE];
mp_size_t nsize, dsize, qsize, rsize, psize;
int test;
mp_limb_t qlimb;
for (test = 0; ; test++)
{
#ifdef RANDOM
nsize = random () % (2 * SIZE) + 1;
dsize = random () % nsize + 1;
#else
nsize = 2 * SIZE;
dsize = SIZE;
#endif
mpn_random2 (nptr, nsize);
mpn_random2 (dptr, dsize);
dptr[dsize - 1] |= (mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1);
MPN_COPY (rptr, nptr, nsize);
qlimb = mpn_divrem (qptr, (mp_size_t) 0, rptr, nsize, dptr, dsize);
rsize = dsize;
qsize = nsize - dsize;
qptr[qsize] = qlimb;
qsize += qlimb;
if (qsize == 0 || qsize > 2 * SIZE)
{
continue; /* bogus */
}
else
{
mp_limb_t cy;
if (qsize > dsize)
mpn_mul (pptr, qptr, qsize, dptr, dsize);
else
mpn_mul (pptr, dptr, dsize, qptr, qsize);
psize = qsize + dsize;
psize -= pptr[psize - 1] == 0;
cy = mpn_add (pptr, pptr, psize, rptr, rsize);
pptr[psize] = cy;
psize += cy;
}
if (nsize != psize || mpn_cmp (nptr, pptr, nsize) != 0)
abort ();
}
}