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/*
Copyright (C) 2012, 2014 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 "flint/long_extras.h"
#include "fmpr.h"
static slong
fmpr_mul_si_naive(fmpr_t z, const fmpr_t x, slong y, slong prec, fmpr_rnd_t rnd)
{
fmpr_t t; slong r;
fmpr_init(t);
fmpr_set_si(t, y);
r = fmpr_mul(z, x, t, prec, rnd);
fmpr_clear(t);
return r;
}
int main()
{
slong iter, iter2;
flint_rand_t state;
flint_printf("mul_si....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 300 * arb_test_multiplier(); iter++)
{
fmpr_t x, z, v;
slong y;
slong prec, r1, r2;
fmpr_rnd_t rnd;
fmpr_init(x);
fmpr_init(z);
fmpr_init(v);
for (iter2 = 0; iter2 < 30; iter2++)
{
fmpr_randtest_special(x, state, 2000, 200);
y = z_randtest(state);
prec = 2 + n_randint(state, 2000);
switch (n_randint(state, 4))
{
case 0: rnd = FMPR_RND_DOWN; break;
case 1: rnd = FMPR_RND_UP; break;
case 2: rnd = FMPR_RND_FLOOR; break;
default: rnd = FMPR_RND_CEIL; break;
}
switch (n_randint(state, 2))
{
case 0:
r1 = fmpr_mul_si(z, x, y, prec, rnd);
r2 = fmpr_mul_si_naive(v, x, y, prec, rnd);
if (!fmpr_equal(z, v) || r1 != r2 || !fmpr_check_ulp(z, r1, prec))
{
flint_printf("FAIL!\n");
flint_printf("x = "); fmpr_print(x); flint_printf("\n\n");
flint_printf("y = %wd\n\n", y);
flint_printf("z = "); fmpr_print(z); flint_printf("\n\n");
flint_printf("v = "); fmpr_print(v); flint_printf("\n\n");
flint_printf("r1 = %wd, r2 = %wd\n", r1, r2);
flint_abort();
}
break;
default:
fmpr_set(v, x);
fmpr_set(z, x);
r1 = fmpr_mul_si(z, z, y, prec, rnd);
r2 = fmpr_mul_si_naive(v, v, y, prec, rnd);
if (!fmpr_equal(z, v) || r1 != r2 || !fmpr_check_ulp(z, r1, prec))
{
flint_printf("FAIL (aliasing 1)!\n");
flint_printf("x = "); fmpr_print(x); flint_printf("\n\n");
flint_printf("y = %wd\n\n", y);
flint_printf("z = "); fmpr_print(z); flint_printf("\n\n");
flint_printf("v = "); fmpr_print(v); flint_printf("\n\n");
flint_printf("r1 = %wd, r2 = %wd\n", r1, r2);
flint_abort();
}
break;
}
}
fmpr_clear(x);
fmpr_clear(z);
fmpr_clear(v);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
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