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/* tpow -- test file for mpc_pow.
Copyright (C) 2009, 2011, 2012, 2013 INRIA
This file is part of GNU MPC.
GNU MPC is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see http://www.gnu.org/licenses/ .
*/
#include "mpc-tests.h"
static void
reuse_bug (void)
{
/* bug found by the automatic builds on
http://hydra.nixos.org/build/1469029/log/raw */
mpc_t x, y, z;
mp_prec_t prec = 2;
for (prec = 2; prec <= 20; prec ++)
{
mpc_init2 (x, prec);
mpc_init2 (y, prec);
mpc_init2 (z, prec);
mpfr_set_ui (mpc_realref (x), 0ul, MPFR_RNDN);
mpfr_set_ui_2exp (mpc_imagref (x), 3ul, -2, MPFR_RNDN);
mpc_set_ui (y, 8ul, MPC_RNDNN);
mpc_pow (z, x, y, MPC_RNDNN);
mpc_pow (y, x, y, MPC_RNDNN);
if (mpfr_signbit (mpc_imagref (y)) != mpfr_signbit (mpc_imagref (z)))
{
printf ("Error: regression, reuse_bug reproduced\n");
exit (1);
}
mpc_clear (x);
mpc_clear (y);
mpc_clear (z);
}
}
/* at precision 53, mpc_pow gave (inf,-inf), and
at precision 73, it gave (inf,inf) */
static void
bug20200208 (void)
{
mpc_t x, y, z, zr;
mpfr_prec_t prec1 = 53, prec2 = 73;
mpc_init2 (x, prec1);
mpc_init2 (y, prec1);
mpc_init2 (z, prec1);
mpc_init2 (zr, prec2);
mpfr_set_d (mpc_realref (x), 2.0851332234623992e-197, MPFR_RNDN);
mpfr_set_d (mpc_imagref (x), -5.6221457829327427e-17, MPFR_RNDN);
mpfr_set_d (mpc_realref (y), -2.1866902464899554e+138, MPFR_RNDN);
mpfr_set_d (mpc_imagref (y), 2.5932544562430328e-234, MPFR_RNDN);
mpc_pow (z, x, y, MPC_RNDNN);
mpc_pow (zr, x, y, MPC_RNDNN);
if (mpc_cmp (z, zr))
{
printf ("Inconsistent power with different precisions:\n");
mpfr_printf ("prec %lu: (%Re,%Re)\n",
prec1, mpc_realref (z), mpc_imagref (z));
mpfr_printf ("prec %lu: (%Re,%Re)\n",
prec2, mpc_realref (zr), mpc_imagref (zr));
exit (1);
}
mpc_clear (x);
mpc_clear (y);
mpc_clear (z);
mpc_clear (zr);
}
#define MPC_FUNCTION_CALL \
P[0].mpc_inex = mpc_pow (P[1].mpc, P[2].mpc, P[3].mpc, P[4].mpc_rnd)
#define MPC_FUNCTION_CALL_REUSE_OP1 \
P[0].mpc_inex = mpc_pow (P[1].mpc, P[1].mpc, P[3].mpc, P[4].mpc_rnd)
#define MPC_FUNCTION_CALL_REUSE_OP2 \
P[0].mpc_inex = mpc_pow (P[1].mpc, P[2].mpc, P[1].mpc, P[4].mpc_rnd)
#include "data_check.tpl"
#include "tgeneric.tpl"
int
main (void)
{
test_start ();
bug20200208 ();
reuse_bug ();
data_check_template ("pow.dsc", "pow.dat");
tgeneric_template ("pow.dsc", 2, 1024, 7, 10);
test_end ();
return 0;
}
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