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/* Test mpn_scan0 and mpn_scan1.
Copyright 2002 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 3 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. If not, see http://www.gnu.org/licenses/. */
#include <stdio.h>
#include <stdlib.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "tests.h"
#define SIZE ((mp_size_t) 3)
mp_limb_t x[SIZE+1];
void
check (void)
{
unsigned long i, got, want;
x[SIZE] = 1;
for (i = 0; i < SIZE*GMP_NUMB_BITS; i++)
{
got = refmpn_scan1 (x, i);
want = mpn_scan1 (x, i);
if (got != want)
{
printf ("mpn_scan1\n");
printf (" i %lu\n", i);
printf (" got %lu\n", got);
printf (" want %lu\n", want);
mpn_trace (" x ", x, SIZE);
abort ();
}
}
x[SIZE] = 0;
for (i = 0; i < SIZE*GMP_NUMB_BITS; i++)
{
got = refmpn_scan0 (x, i);
want = mpn_scan0 (x, i);
if (got != want)
{
printf ("mpn_scan0\n");
printf (" i %lu\n", i);
printf (" got %lu\n", got);
printf (" want %lu\n", want);
mpn_trace (" x ", x, SIZE);
abort ();
}
}
}
void
check_twobits (void)
{
#define TWOBITS(a, b) \
((CNST_LIMB(1) << (a)) | (CNST_LIMB(1) << (b)))
refmpn_zero (x, SIZE);
x[0] = TWOBITS (1, 0);
check ();
refmpn_zero (x, SIZE);
x[0] = TWOBITS (GMP_NUMB_BITS-1, 1);
check ();
refmpn_zero (x, SIZE);
x[0] = CNST_LIMB(1);
x[1] = CNST_LIMB(1);
check ();
refmpn_zero (x, SIZE);
x[0] = CNST_LIMB(1) << (GMP_NUMB_BITS-1);
x[1] = CNST_LIMB(1);
check ();
refmpn_zero (x, SIZE);
x[1] = TWOBITS (1, 0);
check ();
refmpn_zero (x, SIZE);
x[1] = CNST_LIMB(1);
x[2] = CNST_LIMB(1);
check ();
}
/* This is unused, it takes too long, especially on 64-bit systems. */
void
check_twobits_exhaustive (void)
{
unsigned long i, j;
for (i = 0; i < GMP_NUMB_BITS * SIZE; i++)
{
for (j = 0; j < GMP_NUMB_BITS * SIZE; j++)
{
refmpn_zero (x, SIZE);
refmpn_setbit (x, i);
refmpn_setbit (x, j);
check ();
}
}
}
void
check_rand (void)
{
int i;
for (i = 0; i < 100; i++)
{
refmpn_random2 (x, SIZE);
check ();
}
}
int
main (void)
{
mp_trace_base = -16;
tests_start ();
check_twobits ();
check_rand ();
tests_end ();
exit (0);
}
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