87 lines
2.4 KiB
C
87 lines
2.4 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 "flint.h"
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#include "fmpz.h"
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#include "fmpq.h"
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#include "arith.h"
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#include "ulong_extras.h"
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#include "math.h"
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int main(void)
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{
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double s1, s2f;
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fmpz_t hh, kk;
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fmpq_t s2;
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slong h, k;
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FLINT_TEST_INIT(state);
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flint_printf("dedekind_sum_coprime_d....");
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fflush(stdout);
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fmpz_init(hh);
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fmpz_init(kk);
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fmpq_init(s2);
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for (k = 0; k < 300; k++)
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{
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for (h = 0; h <= k; h++)
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{
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if (n_gcd(k, h) == 1)
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{
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fmpz_set_si(hh, h);
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fmpz_set_si(kk, k);
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s1 = arith_dedekind_sum_coprime_d(h, k);
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arith_dedekind_sum_naive(s2, hh, kk);
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s2f = ((double)fmpz_get_si(fmpq_numref(s2))) /
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fmpz_get_si(fmpq_denref(s2));
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if (fabs(s1 - s2f) > 1e-10)
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{
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flint_printf("FAIL:\n");
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flint_printf("s(%wd,%wd)\n", h, k);
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flint_printf("s1: %.20f\n", s1);
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flint_printf("s2: %.20f\n", s2f);
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flint_printf("Exact: "); fmpq_print(s2); flint_printf("\n");
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abort();
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}
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}
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}
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}
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fmpz_clear(hh);
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fmpz_clear(kk);
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fmpq_clear(s2);
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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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