138 lines
3.7 KiB
C
138 lines
3.7 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 Sebastian Pancratz
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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 "fmpz.h"
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#include "fmpz_vec.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 i, result;
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FLINT_TEST_INIT(state);
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flint_printf("scalar_smod_fmpz....");
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fflush(stdout);
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/* Check aliasing of a and b */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpz_t p;
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fmpz *a, *b;
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slong len = n_randint(state, 100);
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fmpz_init(p);
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fmpz_randtest_unsigned(p, state, 100);
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fmpz_add_ui(p, p, 1);
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a = _fmpz_vec_init(len);
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b = _fmpz_vec_init(len);
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_fmpz_vec_randtest(a, state, len, 200);
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_fmpz_vec_scalar_smod_fmpz(b, a, len, p);
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_fmpz_vec_scalar_smod_fmpz(a, a, len, p);
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result = (_fmpz_vec_equal(a, a, len));
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if (!result)
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{
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flint_printf("FAIL:\n");
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_fmpz_vec_print(a, len), flint_printf("\n\n");
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_fmpz_vec_print(b, len), flint_printf("\n\n");
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abort();
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}
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_fmpz_vec_clear(a, len);
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_fmpz_vec_clear(b, len);
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fmpz_clear(p);
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}
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/* Check the result is reduced */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpz_t p, lo, hi;
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fmpz *a, *b;
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slong j, len = n_randint(state, 100);
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fmpz_init(p);
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fmpz_init(lo);
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fmpz_init(hi);
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fmpz_randtest_unsigned(p, state, 100);
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fmpz_add_ui(p, p, 1);
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if (fmpz_cmp_ui(p, 2) > 0)
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{
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fmpz_fdiv_q_2exp(hi, p, 1);
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fmpz_neg(lo, hi);
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}
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else if (fmpz_cmp_ui(p, 2) == 0)
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{
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fmpz_zero(lo);
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fmpz_one(hi);
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}
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else
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{
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fmpz_zero(lo);
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fmpz_zero(hi);
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}
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a = _fmpz_vec_init(len);
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b = _fmpz_vec_init(len);
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_fmpz_vec_randtest(a, state, len, 200);
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_fmpz_vec_scalar_smod_fmpz(b, a, len, p);
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result = 1;
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for (j = 0; j < len; j++)
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result &= (fmpz_cmp(lo, b + j) <= 0 && fmpz_cmp(b + j, hi) <= 0);
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if (!result)
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{
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flint_printf("FAIL:\n");
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_fmpz_vec_print(a, len), flint_printf("\n\n");
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_fmpz_vec_print(b, len), flint_printf("\n\n");
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fmpz_print(p), flint_printf("\n\n");
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fmpz_print(lo), flint_printf("\n\n");
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fmpz_print(hi), flint_printf("\n\n");
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abort();
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}
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_fmpz_vec_clear(a, len);
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_fmpz_vec_clear(b, len);
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fmpz_clear(p);
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fmpz_clear(lo);
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fmpz_clear(hi);
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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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