mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
75 lines
2 KiB
C
75 lines
2 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.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("rgamma....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 3000 * arb_test_multiplier(); iter++)
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{
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acb_t a, b, c;
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slong prec1, prec2;
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prec1 = 2 + n_randint(state, 1000);
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prec2 = prec1 + 30;
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acb_init(a);
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acb_init(b);
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acb_init(c);
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arb_randtest_precise(acb_realref(a), state, 1 + n_randint(state, 1000), 3);
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arb_randtest_precise(acb_imagref(a), state, 1 + n_randint(state, 1000), 3);
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acb_rgamma(b, a, prec1);
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acb_rgamma(c, a, prec2);
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if (!acb_overlaps(b, c))
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{
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flint_printf("FAIL: overlap\n\n");
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flint_printf("a = "); acb_print(a); flint_printf("\n\n");
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flint_printf("b = "); acb_print(b); flint_printf("\n\n");
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flint_printf("c = "); acb_print(c); flint_printf("\n\n");
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abort();
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}
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/* check 1/gamma(z+1) = 1/gamma(z)/z */
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acb_div(b, b, a, prec1);
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acb_add_ui(c, a, 1, prec1);
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acb_rgamma(c, c, prec1);
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if (!acb_overlaps(b, c))
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{
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flint_printf("FAIL: functional equation\n\n");
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flint_printf("a = "); acb_print(a); flint_printf("\n\n");
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flint_printf("b = "); acb_print(b); flint_printf("\n\n");
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flint_printf("c = "); acb_print(c); flint_printf("\n\n");
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abort();
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}
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acb_clear(a);
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acb_clear(b);
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acb_clear(c);
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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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