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/* Test mpn_mul function for all sizes up to a selected limit.
Copyright 2011, 2012 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU 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 test suite 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 General
Public License for more details.
You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include <stdlib.h>
#include <stdio.h>
#include "gmp-impl.h"
#include "tests.h"
static unsigned
isqrt (unsigned t)
{
unsigned s, b;
for (b = 0, s = t; b++, s >>= 1; )
;
s = 1 << (b >> 1);
if (b & 1)
s += s >> 1;
do
{
b = t / s;
s = (s + b) >> 1;
}
while (b < s);
return s;
}
int
main (int argc, char **argv)
{
mp_ptr ap, bp, rp, refp;
mp_size_t max_n, an, bn, rn;
int reps;
TMP_DECL;
TMP_MARK;
reps = 1;
tests_start ();
TESTS_REPS (reps, argv, argc);
/* Re-interpret reps argument as a size argument. */
max_n = isqrt (reps * 25000);
ap = TMP_ALLOC_LIMBS (max_n + 1);
bp = TMP_ALLOC_LIMBS (max_n + 1);
rp = TMP_ALLOC_LIMBS (2 * max_n);
refp = TMP_ALLOC_LIMBS (2 * max_n);
for (an = 1; an <= max_n; an += 1)
{
for (bn = 1; bn <= an; bn += 1)
{
mpn_random2 (ap, an + 1);
mpn_random2 (bp, bn + 1);
refmpn_mul (refp, ap, an, bp, bn);
mpn_mul (rp, ap, an, bp, bn);
rn = an + bn;
if (mpn_cmp (refp, rp, rn))
{
printf ("ERROR, an = %d, bn = %d, rn = %d\n",
(int) an, (int) bn, (int) rn);
printf ("a: "); mpn_dump (ap, an);
printf ("b: "); mpn_dump (bp, bn);
printf ("r: "); mpn_dump (rp, rn);
printf ("ref: "); mpn_dump (refp, rn);
abort();
}
}
}
TMP_FREE;
tests_end ();
return 0;
}
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