118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
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/*============================================================================
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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 "fmpz.h"
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#include "ulong_extras.h"
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int main()
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{
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slong i, j;
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int sign;
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fmpz_t input;
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fmpz_t result;
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fmpz_t r1;
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fmpz_t m1;
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fmpz_t mprod;
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ulong r2, m2;
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FLINT_TEST_INIT(state);
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flint_printf("CRT_ui....");
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fflush(stdout);
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fmpz_init(input);
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fmpz_init(result);
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fmpz_init(r1);
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fmpz_init(m1);
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fmpz_init(mprod);
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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slong nprimes;
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m2 = n_randtest_prime(state, 0);
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nprimes = 1 + n_randint(state, 4);
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fmpz_set_ui(m1, UWORD(1));
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for (j = 0; j < nprimes; )
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{
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ulong t = n_randtest_prime(state, 0);
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if (t != m2)
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{
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fmpz_mul_ui(m1, m1, t);
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j++;
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}
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}
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fmpz_mul_ui(mprod, m1, m2);
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sign = n_randint(state, 2);
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if (sign)
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fmpz_randtest_mod_signed(input, state, mprod);
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else
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fmpz_randtest_mod(input, state, mprod);
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fmpz_mod(r1, input, m1);
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r2 = fmpz_fdiv_ui(input, m2);
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fmpz_CRT_ui(result, r1, m1, r2, m2, sign);
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if (!fmpz_equal(result, input))
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{
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flint_printf("FAIL:\n");
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flint_printf("m1: "); fmpz_print(m1); flint_printf("\n");
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flint_printf("m2: %wu\n", m2);
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flint_printf("m1*m2: "); fmpz_print(mprod); flint_printf("\n");
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flint_printf("input: "); fmpz_print(input); flint_printf("\n");
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flint_printf("r1: "); fmpz_print(r1); flint_printf("\n");
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flint_printf("r2: %wu\n", r2);
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flint_printf("result: "); fmpz_print(result); flint_printf("\n");
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flint_printf("%wd Equalness: %d\n", i, fmpz_equal(result, input));
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flint_printf("\n");
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abort();
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}
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}
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fmpz_clear(input);
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fmpz_clear(result);
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fmpz_clear(r1);
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fmpz_clear(m1);
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fmpz_clear(mprod);
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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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