90 lines
2.5 KiB
C
90 lines
2.5 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) 2009 William Hart
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Copyright (C) 2010 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_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 i, result;
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FLINT_TEST_INIT(state);
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flint_printf("2norm_normalised_bits....");
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fflush(stdout);
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/* Check aliasing */
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for (i = 0; i < 1000 * flint_test_multiplier(); i++)
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{
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fmpz_t a, b, c;
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fmpz_poly_t f;
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mp_bitcnt_t b1, b2;
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fmpz_init(a);
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fmpz_init(b);
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fmpz_init(c);
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fmpz_poly_init(f);
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do {
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fmpz_poly_randtest(f, state, n_randint(state, 100) + 1, 200);
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} while (f->length == 0);
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fmpz_poly_2norm(a, f);
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fmpz_abs(b, fmpz_poly_lead(f));
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fmpz_fdiv_q(c, a, b);
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b1 = fmpz_bits(c);
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b2 = _fmpz_poly_2norm_normalised_bits(f->coeffs, f->length);
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result = (b1 == b2 || b1 + 1 == b2);
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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\n");
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fmpz_print(b), flint_printf("\n\n");
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fmpz_print(c), flint_printf("\n\n");
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flint_printf("b1 = %wd, b2 = %wd\n", b1, b2);
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abort();
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}
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fmpz_clear(a);
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fmpz_clear(b);
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fmpz_clear(c);
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fmpz_poly_clear(f);
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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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