mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
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Copyright (C) 2012 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_poly.h"
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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("rising_ui_series....");
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fflush(stdout);
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flint_randinit(state);
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/* check rf(f, a) * rf(f + a, b) = rf(f, a + b) */
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for (iter = 0; iter < 1000 * arb_test_multiplier(); iter++)
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{
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slong bits, trunc;
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ulong a, b;
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acb_poly_t f, g, h1, h2, h1h2, h3;
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bits = 2 + n_randint(state, 200);
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trunc = 1 + n_randint(state, 20);
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a = n_randint(state, 10);
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b = n_randint(state, 10);
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acb_poly_init(f);
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acb_poly_init(g);
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acb_poly_init(h1);
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acb_poly_init(h2);
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acb_poly_init(h1h2);
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acb_poly_init(h3);
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acb_poly_randtest(f, state, 1 + n_randint(state, 20), bits, 4);
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acb_poly_set(g, f);
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/* g = f + 1 */
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if (g->length == 0)
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{
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acb_poly_fit_length(g, 1);
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acb_set_ui(g->coeffs, a);
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_acb_poly_set_length(g, 1);
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_acb_poly_normalise(g);
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}
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else
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{
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acb_add_ui(g->coeffs, g->coeffs, a, bits);
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_acb_poly_normalise(g);
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}
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acb_poly_rising_ui_series(h1, f, a, trunc, bits);
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acb_poly_rising_ui_series(h2, g, b, trunc, bits);
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acb_poly_rising_ui_series(h3, f, a + b, trunc, bits);
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acb_poly_mullow(h1h2, h1, h2, trunc, bits);
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if (!acb_poly_overlaps(h1h2, h3))
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{
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flint_printf("FAIL\n\n");
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flint_printf("bits = %wd\n", bits);
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flint_printf("trunc = %wd\n", trunc);
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flint_printf("a = %wu\n", a);
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flint_printf("b = %wu\n", a);
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flint_printf("f = "); acb_poly_printd(f, 15); flint_printf("\n\n");
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flint_printf("g = "); acb_poly_printd(g, 15); flint_printf("\n\n");
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flint_printf("h1 = "); acb_poly_printd(h1, 15); flint_printf("\n\n");
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flint_printf("h2 = "); acb_poly_printd(h2, 15); flint_printf("\n\n");
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flint_printf("h1h2 = "); acb_poly_printd(h1h2, 15); flint_printf("\n\n");
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flint_printf("h3 = "); acb_poly_printd(h3, 15); flint_printf("\n\n");
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abort();
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}
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acb_poly_rising_ui_series(f, f, a, trunc, bits);
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if (!acb_poly_equal(f, h1))
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{
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flint_printf("FAIL (aliasing)\n\n");
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flint_printf("bits = %wd\n", bits);
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flint_printf("trunc = %wd\n", trunc);
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flint_printf("a = %wu\n", a);
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flint_printf("b = %wu\n", a);
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flint_printf("f = "); acb_poly_printd(f, 15); flint_printf("\n\n");
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flint_printf("h1 = "); acb_poly_printd(h1, 15); flint_printf("\n\n");
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abort();
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}
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acb_poly_clear(f);
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acb_poly_clear(g);
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acb_poly_clear(h1);
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acb_poly_clear(h2);
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acb_poly_clear(h1h2);
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acb_poly_clear(h3);
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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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