mirror of
https://github.com/vale981/arb
synced 2025-03-05 17:31:38 -05:00
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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Copyright (C) 2021 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 "arb_hypgeom.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("gamma_upper_sum_rs....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
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{
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fmpq_t a;
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ulong p, q;
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arb_t z, r1, r2, s, t, u;
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slong k, N, prec;
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p = n_randint(state, 1000);
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q = 1 + n_randint(state, 1000);
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N = n_randint(state, 100);
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prec = 2 + n_randint(state, 500);
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fmpq_init(a);
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fmpq_set_si(a, p, q);
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arb_init(z);
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arb_init(r1);
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arb_init(r2);
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arb_init(s);
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arb_init(t);
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arb_init(u);
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arb_randtest(z, state, prec, 10);
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_arb_hypgeom_gamma_upper_sum_rs_1(r1, p, q, z, N, prec);
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arb_zero(s);
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arb_one(t);
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arb_set_fmpq(u, a, prec);
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for (k = 0; k < N; k++)
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{
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arb_add(s, s, t, prec);
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arb_div(t, t, z, prec);
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arb_mul(t, t, u, prec);
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arb_add_ui(u, u, 1, prec);
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}
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arb_set(r2, s);
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if (!arb_overlaps(r1, r2))
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{
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flint_printf("FAIL: overlap\n\n");
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flint_printf("N = %wd\n\n", N);
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flint_printf("a = "); fmpq_print(a); flint_printf("\n\n");
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flint_printf("z = "); arb_printn(z, 100, 0); flint_printf("\n\n");
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flint_printf("r1 = "); arb_printn(r1, 100, 0); flint_printf("\n\n");
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flint_printf("r2 = "); arb_printn(r2, 100, 0); flint_printf("\n\n");
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flint_abort();
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}
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fmpq_clear(a);
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arb_clear(z);
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arb_clear(r1);
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arb_clear(r2);
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arb_clear(s);
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arb_clear(t);
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arb_clear(u);
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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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