122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2011 Fredrik Johansson
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmp.h>
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#include "flint.h"
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#include "nmod_vec.h"
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#include "nmod_poly.h"
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#include "ulong_extras.h"
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int
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main(void)
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{
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int iter;
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FLINT_TEST_INIT(state);
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flint_printf("deflate....");
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fflush(stdout);
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for (iter = 0; iter < 100 * flint_test_multiplier(); iter++)
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{
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nmod_poly_t poly1, poly2, poly3;
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mp_limb_t modulus;
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ulong infl1, infl, deflation;
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modulus = n_randtest_prime(state, 0);
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nmod_poly_init(poly1, modulus);
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nmod_poly_init(poly2, modulus);
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nmod_poly_init(poly3, modulus);
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nmod_poly_randtest(poly1, state, n_randint(state, 15));
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if (nmod_poly_length(poly1) <= 1)
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{
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if (nmod_poly_deflation(poly1) != nmod_poly_length(poly1))
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{
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flint_printf("FAIL: wrong deflation for constant polynomial\n");
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abort();
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}
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nmod_poly_deflate(poly2, poly1, n_randint(state, 5) + 1);
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if (!nmod_poly_equal(poly2, poly1))
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{
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flint_printf("FAIL: constant polynomial changed on deflation\n");
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abort();
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}
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}
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else
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{
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infl = n_randint(state, 13) + 1;
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infl1 = nmod_poly_deflation(poly1);
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nmod_poly_inflate(poly2, poly1, infl);
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deflation = nmod_poly_deflation(poly2);
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if (deflation != infl * infl1)
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{
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flint_printf("FAIL: deflation = %wu, inflation: %wu, %wu\n",
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deflation, infl, infl1);
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flint_printf("poly1:\n"); nmod_poly_print(poly1); flint_printf("\n\n");
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flint_printf("poly2:\n"); nmod_poly_print(poly2); flint_printf("\n\n");
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abort();
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}
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nmod_poly_deflate(poly3, poly2, infl);
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if (!nmod_poly_equal(poly3, poly1))
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{
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flint_printf("FAIL: deflation = %wu, inflation: %wu, %wu\n",
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deflation, infl, infl1);
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flint_printf("Deflated polynomial not equal to input:\n");
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flint_printf("poly1:\n"); nmod_poly_print(poly1); flint_printf("\n\n");
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flint_printf("poly2:\n"); nmod_poly_print(poly2); flint_printf("\n\n");
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flint_printf("poly3:\n"); nmod_poly_print(poly2); flint_printf("\n\n");
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abort();
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}
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nmod_poly_deflate(poly2, poly2, infl);
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if (!nmod_poly_equal(poly3, poly2))
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{
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flint_printf("FAIL: aliasing\n");
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abort();
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}
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}
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nmod_poly_clear(poly1);
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nmod_poly_clear(poly2);
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nmod_poly_clear(poly3);
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}
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FLINT_TEST_CLEANUP(state);
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flint_printf("PASS\n");
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return 0;
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}
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