118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/* Test for various Toom squaring functions.
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Copyright 2009, 2012 Free Software Foundation, Inc.
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This file is part of the GNU MP Library test suite.
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The GNU MP Library test suite is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 3 of the License,
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or (at your option) any later version.
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The GNU MP Library test suite is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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Public License for more details.
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You should have received a copy of the GNU General Public License along with
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the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
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#include <stdlib.h>
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#include <stdio.h>
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#include "gmp-impl.h"
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#include "tests.h"
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/* Main file is expected to define mpn_toomN_mul, mpn_toomN_sqr_itch,
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* MIN_AN, MAX_AN and then include this file. */
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#ifndef COUNT
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#define COUNT 2000
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#endif
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int
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main (int argc, char **argv)
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{
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mp_ptr ap, refp, pp, scratch;
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int count = COUNT;
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int test;
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gmp_randstate_ptr rands;
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TMP_DECL;
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TMP_MARK;
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TESTS_REPS (count, argv, argc);
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tests_start ();
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if (MAX_AN > MIN_AN) {
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rands = RANDS;
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ap = TMP_ALLOC_LIMBS (MAX_AN);
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refp = TMP_ALLOC_LIMBS (MAX_AN * 2);
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pp = 1 + TMP_ALLOC_LIMBS (MAX_AN * 2 + 2);
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scratch
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= 1+TMP_ALLOC_LIMBS (mpn_toomN_sqr_itch (MAX_AN) + 2);
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for (test = 0; test < count; test++)
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{
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mp_size_t an;
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mp_size_t itch;
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mp_limb_t p_before, p_after, s_before, s_after;
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an = MIN_AN
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+ gmp_urandomm_ui (rands, MAX_AN - MIN_AN);
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mpn_random2 (ap, an);
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mpn_random2 (pp-1, an * 2 + 2);
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p_before = pp[-1];
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p_after = pp[an * 2];
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itch = mpn_toomN_sqr_itch (an);
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ASSERT_ALWAYS (itch <= mpn_toomN_sqr_itch (MAX_AN));
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mpn_random2 (scratch-1, itch+2);
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s_before = scratch[-1];
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s_after = scratch[itch];
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mpn_toomN_sqr (pp, ap, an, scratch);
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refmpn_mul (refp, ap, an, ap, an);
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if (pp[-1] != p_before || pp[an * 2] != p_after
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|| scratch[-1] != s_before || scratch[itch] != s_after
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|| mpn_cmp (refp, pp, an * 2) != 0)
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{
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printf ("ERROR in test %d, an = %d\n",
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test, (int) an);
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if (pp[-1] != p_before)
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{
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printf ("before pp:"); mpn_dump (pp -1, 1);
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printf ("keep: "); mpn_dump (&p_before, 1);
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}
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if (pp[an * 2] != p_after)
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{
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printf ("after pp:"); mpn_dump (pp + an * 2, 1);
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printf ("keep: "); mpn_dump (&p_after, 1);
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}
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if (scratch[-1] != s_before)
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{
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printf ("before scratch:"); mpn_dump (scratch-1, 1);
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printf ("keep: "); mpn_dump (&s_before, 1);
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}
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if (scratch[itch] != s_after)
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{
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printf ("after scratch:"); mpn_dump (scratch + itch, 1);
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printf ("keep: "); mpn_dump (&s_after, 1);
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}
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mpn_dump (ap, an);
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mpn_dump (pp, an * 2);
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mpn_dump (refp, an * 2);
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abort();
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}
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}
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TMP_FREE;
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}
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tests_end ();
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return 0;
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}
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