mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
118 lines
3.2 KiB
C
118 lines
3.2 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("lgamma....");
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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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arb_t z, s1, s2, a, b;
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slong prec, ebits, prec2;
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prec = 2 + n_randint(state, 200);
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if (n_randint(state, 10) == 0)
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prec = 2 + n_randint(state, 1000);
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if (n_randint(state, 10) == 0)
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ebits = 100;
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else
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ebits = 10;
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ebits = 2;
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prec2 = 2 + n_randint(state, 200);
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arb_init(z);
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arb_init(s1);
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arb_init(s2);
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arb_init(a);
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arb_init(b);
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arb_randtest(z, state, prec, ebits);
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arb_randtest(s1, state, prec, 10);
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arb_randtest(s2, state, prec, 10);
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if (n_randint(state, 2))
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{
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arb_hypgeom_lgamma(s1, z, prec);
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}
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else
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{
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arb_set(s1, z);
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arb_hypgeom_lgamma(s1, s1, prec);
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}
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arb_add_ui(s2, z, 1, prec2);
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arb_hypgeom_lgamma(s2, s2, prec2);
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arb_log(a, z, prec2);
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arb_sub(s2, s2, a, prec2);
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if (!arb_overlaps(s1, s2))
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{
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flint_printf("FAIL\n\n");
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flint_printf("prec = %wd\n\n", prec);
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flint_printf("z = "); arb_printn(z, 1000, 0); flint_printf("\n\n");
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flint_printf("s1 = "); arb_printn(s1, 1000, 0); flint_printf("\n\n");
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flint_printf("s2 = "); arb_printn(s2, 1000, 0); flint_printf("\n\n");
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arb_sub(s1, s1, s2, prec2);
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flint_printf("s1 - s2 = "); arb_printd(s1, 1000); flint_printf("\n\n");
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flint_abort();
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}
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arb_set(a, z);
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mag_zero(arb_radref(a));
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if (n_randint(state, 2))
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{
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arf_set_mag(arb_midref(b), arb_radref(z));
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if (n_randint(state, 2))
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arb_neg(b, b);
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arb_add(a, a, b, prec);
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}
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arb_hypgeom_lgamma(s2, a, prec);
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if (!arb_overlaps(s1, s2))
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{
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flint_printf("FAIL (2)\n\n");
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flint_printf("prec = %wd\n\n", prec);
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flint_printf("z = "); arb_printn(z, 1000, 0); flint_printf("\n\n");
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flint_printf("a = "); arb_printn(a, 1000, 0); flint_printf("\n\n");
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flint_printf("s1 = "); arb_printn(s1, 1000, 0); flint_printf("\n\n");
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flint_printf("s2 = "); arb_printn(s2, 1000, 0); flint_printf("\n\n");
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arb_sub(s1, s1, s2, prec2);
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flint_printf("s1 - s2 = "); arb_printd(s1, 1000); flint_printf("\n\n");
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flint_abort();
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}
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arb_clear(z);
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arb_clear(s1);
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arb_clear(s2);
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arb_clear(a);
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arb_clear(b);
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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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