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/*
Copyright (C) 2012 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_poly.h"
int main()
{
slong iter;
flint_rand_t state;
flint_printf("evaluate_horner....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
{
slong qbits1, qbits2, rbits1, rbits2, rbits3;
fmpq_poly_t F;
fmpq_t X, Y;
acb_poly_t f;
acb_t x, y;
qbits1 = 2 + n_randint(state, 200);
qbits2 = 2 + n_randint(state, 200);
rbits1 = 2 + n_randint(state, 200);
rbits2 = 2 + n_randint(state, 200);
rbits3 = 2 + n_randint(state, 200);
fmpq_poly_init(F);
fmpq_init(X);
fmpq_init(Y);
acb_poly_init(f);
acb_init(x);
acb_init(y);
fmpq_poly_randtest(F, state, 1 + n_randint(state, 20), qbits1);
fmpq_randtest(X, state, qbits2);
fmpq_poly_evaluate_fmpq(Y, F, X);
acb_poly_set_fmpq_poly(f, F, rbits1);
acb_set_fmpq(x, X, rbits2);
acb_poly_evaluate_horner(y, f, x, rbits3);
if (!acb_contains_fmpq(y, Y))
{
flint_printf("FAIL\n\n");
flint_printf("F = "); fmpq_poly_print(F); flint_printf("\n\n");
flint_printf("X = "); fmpq_print(X); flint_printf("\n\n");
flint_printf("Y = "); fmpq_print(Y); flint_printf("\n\n");
flint_printf("f = "); acb_poly_printd(f, 15); flint_printf("\n\n");
flint_printf("x = "); acb_printd(x, 15); flint_printf("\n\n");
flint_printf("y = "); acb_printd(y, 15); flint_printf("\n\n");
flint_abort();
}
/* aliasing */
acb_poly_evaluate_horner(x, f, x, rbits3);
if (!acb_contains_fmpq(x, Y))
{
flint_printf("FAIL (aliasing)\n\n");
flint_abort();
}
fmpq_poly_clear(F);
fmpq_clear(X);
fmpq_clear(Y);
acb_poly_clear(f);
acb_clear(x);
acb_clear(y);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
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