mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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Copyright (C) 2013 Fredrik Johansson
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "acb_calc.h"
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/* sin(x) */
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int
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sin_x(acb_ptr out, const acb_t inp, void * params, slong order, slong prec)
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{
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int xlen = FLINT_MIN(2, order);
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acb_set(out, inp);
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if (xlen > 1)
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acb_one(out + 1);
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_acb_poly_sin_series(out, out, xlen, order, prec);
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return 0;
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}
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static const double answers[10] = {
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1.04570093561423094, 2.0358667496686487, 4.82706400405656566,
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11.2347033850581819, 27.1331828778516522, 67.210305990439042,
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168.564351176369878, 427.496180295369909, 1093.56959348921777,
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2815.70144392142227
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};
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int main()
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{
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slong iter;
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flint_rand_t state;
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flint_printf("cauchy_bound....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 100 * arb_test_multiplier(); iter++)
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{
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arb_t b, radius, ans;
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acb_t x;
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slong r, prec, maxdepth;
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arb_init(b);
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arb_init(radius);
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arb_init(ans);
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acb_init(x);
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acb_set_ui(x, 5);
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r = 1 + n_randint(state, 10);
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arb_set_ui(radius, r);
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prec = 2 + n_randint(state, 100);
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maxdepth = n_randint(state, 10);
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acb_calc_cauchy_bound(b, sin_x, NULL, x, radius, maxdepth, prec);
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arf_set_d(arb_midref(ans), answers[r-1]);
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mag_set_d(arb_radref(ans), 1e-8);
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if (!arb_overlaps(b, ans))
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{
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flint_printf("FAIL\n");
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flint_printf("r = %wd, prec = %wd, maxdepth = %wd\n\n", r, prec, maxdepth);
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arb_printd(b, 15); flint_printf("\n\n");
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arb_printd(ans, 15); flint_printf("\n\n");
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abort();
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}
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arb_clear(b);
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arb_clear(radius);
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arb_clear(ans);
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acb_clear(x);
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}
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flint_randclear(state);
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flint_cleanup();
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flint_printf("PASS\n");
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return EXIT_SUCCESS;
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}
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