116 lines
3.2 KiB
C
116 lines
3.2 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) 2010 William Hart
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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 "ulong_extras.h"
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#include "fmpz.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("bit_pack/bit_unpack....");
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fflush(stdout);
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for (i = 0; i < 50000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, b;
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mp_bitcnt_t bits = n_randint(state, 300) + 1;
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ulong space = (300 - 1) / FLINT_BITS + 2; /* 2 to accomodate shift */
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mp_ptr arr = (mp_ptr) flint_calloc(space, sizeof(mp_limb_t));
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mp_bitcnt_t shift = n_randint(state, FLINT_BITS);
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int negate = (int) -n_randint(state, 2);
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fmpz_init(a);
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fmpz_init(b);
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fmpz_randtest(a, state, bits - 1); /* need one bit for sign */
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arr[0] = n_randbits(state, shift);
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fmpz_bit_pack(arr, shift, bits, a, negate, 0);
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fmpz_bit_unpack(b, arr, shift, bits, negate, 0);
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result = (fmpz_cmp(a, b) == 0);
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if (!result)
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{
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flint_printf("FAIL:\n");
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fmpz_print(a), flint_printf("\n");
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fmpz_print(b), flint_printf("\n");
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abort();
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}
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flint_free(arr);
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fmpz_clear(a);
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fmpz_clear(b);
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}
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for (i = 0; i < 50000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, b;
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mp_bitcnt_t bits = n_randint(state, 300) + 1;
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ulong space = (300 - 1) / FLINT_BITS + 2; /* 2 to accomodate shift */
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mp_ptr arr = (mp_ptr) flint_calloc(space, sizeof(mp_limb_t));
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mp_bitcnt_t shift = n_randint(state, FLINT_BITS);
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fmpz_init(a);
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fmpz_init(b);
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fmpz_randtest_unsigned(a, state, bits);
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arr[0] = n_randbits(state, shift);
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fmpz_bit_pack(arr, shift, bits, a, 0, 0);
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fmpz_bit_unpack_unsigned(b, arr, shift, bits);
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result = (fmpz_cmp(a, b) == 0);
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if (!result)
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{
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flint_printf("FAIL:\n");
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fmpz_print(a), flint_printf("\n");
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fmpz_print(b), flint_printf("\n");
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abort();
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}
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flint_free(arr);
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fmpz_clear(a);
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fmpz_clear(b);
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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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