toom-shared.h
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上传日期:2022-08-06
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- /* Test for various Toom functions.
- Copyright 2009 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 "gmp.h"
- #include "gmp-impl.h"
- #include "tests.h"
- #include <stdlib.h>
- #include <stdio.h>
- /* Main file is expected to define mpn_toomMN_mul,
- * mpn_toomMN_mul_itch, MIN_AN, MIN_BN(an), MAX_BN(an) and then
- * include this file. */
- /* Sizes are up to 2^SIZE_LOG limbs */
- #ifndef SIZE_LOG
- #define SIZE_LOG 10
- #endif
- #ifndef COUNT
- #define COUNT 2000
- #endif
- #define MAX_AN (1L << SIZE_LOG)
- #ifndef MAX_BN
- #define MAX_BN(an) (an)
- #endif
- /* For general toomMN_mul, we need
- *
- * MIN_BN(an) = N + floor(((N-1)*an + M - N)/M)
- *
- * MAX_BN(an) = floor(N*(an-1)/(M-1)) - N + 1
- */
- int
- main (int argc, char **argv)
- {
- mp_ptr ap, bp, refp, pp, scratch;
- int count = COUNT;
- int test;
- gmp_randstate_ptr rands;
- TMP_DECL;
- TMP_MARK;
- if (argc > 1)
- {
- char *end;
- count = strtol (argv[1], &end, 0);
- if (*end || count <= 0)
- {
- fprintf (stderr, "Invalid test count: %s.n", argv[1]);
- return 1;
- }
- }
- tests_start ();
- rands = RANDS;
- ap = TMP_ALLOC_LIMBS (MAX_AN);
- bp = TMP_ALLOC_LIMBS (MAX_BN(MAX_AN));
- refp = TMP_ALLOC_LIMBS (MAX_AN + MAX_BN(MAX_AN));
- pp = 1+TMP_ALLOC_LIMBS (MAX_AN + MAX_BN(MAX_AN)+2);
- scratch
- = 1+TMP_ALLOC_LIMBS (mpn_toomMN_mul_itch (MAX_AN, MAX_BN(MAX_AN))
- + 2);
- for (test = 0; test < count; test++)
- {
- unsigned size_min;
- unsigned size_range;
- mp_size_t an, bn;
- mp_size_t itch;
- mp_limb_t p_before, p_after, s_before, s_after;
- for (size_min = 1; (1L << size_min) < MIN_AN; size_min++)
- ;
- /* We generate an in the MIN_AN <= an <= (1 << size_range). */
- size_range = size_min
- + gmp_urandomm_ui (rands, SIZE_LOG + 1 - size_min);
- an = MIN_AN
- + gmp_urandomm_ui (rands, (1L << size_range) + 1 - MIN_AN);
- bn = MIN_BN(an)
- + gmp_urandomm_ui (rands, MAX_BN(an) + 1 - MIN_BN(an));
- mpn_random2 (ap, an);
- mpn_random2 (bp, bn);
- mpn_random2 (pp-1, an + bn + 2);
- p_before = pp[-1];
- p_after = pp[an + bn];
- itch = mpn_toomMN_mul_itch (an, bn);
- ASSERT_ALWAYS (itch <= mpn_toomMN_mul_itch (MAX_AN, MAX_BN(MAX_AN)));
- mpn_random2 (scratch-1, itch+2);
- s_before = scratch[-1];
- s_after = scratch[itch];
- mpn_toomMN_mul (pp, ap, an, bp, bn, scratch);
- refmpn_mul (refp, ap, an, bp, bn);
- if (pp[-1] != p_before || pp[an + bn] != p_after
- || scratch[-1] != s_before || scratch[itch] != s_after
- || mpn_cmp (refp, pp, an + bn) != 0)
- {
- printf ("ERROR in test %d, an = %d, bn = %dn",
- test, (int) an, (int) bn);
- if (pp[-1] != p_before)
- {
- printf ("before pp:"); mpn_dump (pp -1, 1);
- printf ("keep: "); mpn_dump (&p_before, 1);
- }
- if (pp[an + bn] != p_after)
- {
- printf ("after pp:"); mpn_dump (pp + an + bn, 1);
- printf ("keep: "); mpn_dump (&p_after, 1);
- }
- if (scratch[-1] != s_before)
- {
- printf ("before scratch:"); mpn_dump (scratch-1, 1);
- printf ("keep: "); mpn_dump (&s_before, 1);
- }
- if (scratch[itch] != s_after)
- {
- printf ("after scratch:"); mpn_dump (scratch + itch, 1);
- printf ("keep: "); mpn_dump (&s_after, 1);
- }
- mpn_dump (ap, an);
- mpn_dump (bp, bn);
- mpn_dump (pp, an + bn);
- mpn_dump (refp, an + bn);
- abort();
- }
- }
- TMP_FREE;
- tests_end ();
- return 0;
- }