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/*
Copyright (C) 2018 Fredrik Johansson
This file is part of Arb.
Arb is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "acb_dirichlet.h"
void acb_dirichlet_stieltjes_integral(acb_t res, const fmpz_t n, const acb_t a, slong prec);
void acb_dirichlet_stieltjes_em(acb_t res, const fmpz_t n, const acb_t a, slong prec);
int main()
{
slong iter;
flint_rand_t state;
flint_printf("stieltjes....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 250 * arb_test_multiplier(); iter++)
{
acb_t b1, b2, a;
fmpz_t n;
slong prec1, prec2, acc1, acc2;
int alg1, alg2;
fmpz_init(n);
acb_init(b1);
acb_init(b2);
acb_init(a);
if (n_randint(state, 10) == 0)
{
acb_one(a);
fmpz_randtest(n, state, 1 + n_randint(state, 100));
fmpz_abs(n, n);
prec1 = 2 + n_randint(state, 100);
prec2 = 2 + n_randint(state, 100);
}
else if (n_randint(state, 7) != 0)
{
acb_one(a);
fmpz_randtest(n, state, 2 + n_randint(state, 12));
fmpz_abs(n, n);
prec1 = 2 + n_randint(state, 400);
prec2 = 2 + n_randint(state, 400);
}
else
{
acb_randtest_precise(a, state, 400, 3);
fmpz_randtest(n, state, 7);
fmpz_abs(n, n);
prec1 = 2 + n_randint(state, 400);
prec2 = 2 + n_randint(state, 400);
}
alg1 = n_randint(state, 3);
alg2 = n_randint(state, 3);
if (fmpz_cmp_ui(n, 40) >= 0)
{
alg1 = 1 + n_randint(state, 2);
alg2 = 1 + n_randint(state, 2);
}
else
{
alg1 = n_randint(state, 3);
alg2 = n_randint(state, 3);
}
if (alg1 == 0)
acb_dirichlet_stieltjes_em(b1, n, a, prec1);
else if (alg1 == 1)
acb_dirichlet_stieltjes_integral(b1, n, a, prec1);
else
acb_dirichlet_stieltjes(b1, n, a, prec1);
if (alg2 == 0)
acb_dirichlet_stieltjes_em(b2, n, a, prec2);
else if (alg2 == 1)
acb_dirichlet_stieltjes_integral(b2, n, a, prec2);
else
acb_dirichlet_stieltjes(b2, n, a, prec2);
if (!acb_overlaps(b1, b2))
{
flint_printf("FAIL: overlap\n\n");
flint_printf("iter = %wd, alg1 = %d, alg2 = %d\n\n", iter, alg1, alg2);
flint_printf("n = "); fmpz_print(n); flint_printf("\n\n");
flint_printf("a = "); acb_printn(a, 100, 0); flint_printf("\n\n");
flint_printf("b1 = "); acb_printn(b1, 1000, 0); flint_printf("\n\n");
flint_printf("b2 = "); acb_printn(b2, 1000, 0); flint_printf("\n\n");
flint_abort();
}
acc1 = acb_rel_accuracy_bits(b1);
acc2 = acb_rel_accuracy_bits(b2);
if (acb_is_one(a) && (acc1 < prec1 - 10 || acc2 < prec2 - 10))
{
flint_printf("FAIL: poor accuracy\n\n");
flint_printf("prec1 = %wd, acc1 = %wd\n", prec1, acc1);
flint_printf("prec2 = %wd, acc2 = %wd\n", prec2, acc2);
flint_printf("n = "); fmpz_print(n); flint_printf("\n\n");
flint_printf("b1 = "); acb_printn(b1, 500, 0); flint_printf("\n\n");
flint_printf("b2 = "); acb_printn(b2, 500, 0); flint_printf("\n\n");
flint_abort();
}
acb_clear(b1);
acb_clear(b2);
acb_clear(a);
fmpz_clear(n);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
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