mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/*
|
|
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 < 3000 * 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);
|
|
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);
|
|
abort();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
fmpr_clear(x);
|
|
fmpr_clear(z);
|
|
fmpr_clear(v);
|
|
}
|
|
|
|
flint_randclear(state);
|
|
flint_cleanup();
|
|
flint_printf("PASS\n");
|
|
return EXIT_SUCCESS;
|
|
}
|