arb/mag/test/t-pow_ui.c
2016-04-26 17:20:05 +02:00

87 lines
2 KiB
C

/*
Copyright (C) 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 "mag.h"
int main()
{
slong iter;
flint_rand_t state;
flint_printf("pow_ui....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 100000 * arb_test_multiplier(); iter++)
{
fmpr_t x, y, w;
mag_t xb, yb;
ulong e;
fmpr_init(x);
fmpr_init(y);
fmpr_init(w);
mag_init(xb);
mag_init(yb);
mag_randtest_special(xb, state, 80);
mag_randtest_special(yb, state, 80);
e = n_randtest(state);
mag_get_fmpr(x, xb);
fmpr_pow_sloppy_ui(y, x, e, 2 * MAG_BITS, FMPR_RND_UP);
if (fmpr_is_nan(y))
fmpr_pos_inf(y);
mag_pow_ui(yb, xb, e);
mag_get_fmpr(w, yb);
MAG_CHECK_BITS(xb)
MAG_CHECK_BITS(yb)
if (!(fmpr_cmpabs(y, w) <= 0))
{
flint_printf("FAIL\n\n");
flint_printf("e = %wu\n\n", e);
flint_printf("x = "); fmpr_print(x); flint_printf("\n\n");
flint_printf("y = "); fmpr_print(y); flint_printf("\n\n");
flint_printf("w = "); fmpr_print(w); flint_printf("\n\n");
abort();
}
mag_pow_ui(xb, xb, e);
if (!mag_equal(xb, yb))
{
flint_printf("FAIL (aliasing)\n\n");
flint_printf("e = %wu\n\n", e);
mag_print(xb); flint_printf("\n\n");
mag_print(yb); flint_printf("\n\n");
abort();
}
fmpr_clear(x);
fmpr_clear(y);
fmpr_clear(w);
mag_clear(xb);
mag_clear(yb);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}