vasilito
facf0c92e0
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127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/* tpow_ui -- test file for mpc_pow_ui.
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Copyright (C) 2009, 2010, 2012, 2013 INRIA
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This file is part of GNU MPC.
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GNU MPC is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see http://www.gnu.org/licenses/ .
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*/
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#include <limits.h> /* for CHAR_BIT */
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#include "mpc-tests.h"
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static void
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compare_mpc_pow (mpfr_prec_t pmax, int iter, unsigned long nbits)
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{
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mpfr_prec_t p;
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mpc_t x, y, z, t;
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unsigned long n;
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int i, inex_pow, inex_pow_ui;
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mpc_rnd_t rnd1, rnd2, rnd;
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mpc_init3 (y, sizeof (unsigned long) * CHAR_BIT, MPFR_PREC_MIN);
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for (p = MPFR_PREC_MIN; p <= pmax; p++)
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for (i = 0; i < iter; i++)
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{
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mpc_init2 (x, p);
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mpc_init2 (z, p);
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mpc_init2 (t, p);
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mpc_urandom (x, rands);
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n = gmp_urandomb_ui (rands, nbits); /* 0 <= n < 2^nbits */
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mpc_set_ui (y, n, MPC_RNDNN);
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for (rnd1 = 0; rnd1 < 4; rnd1 ++)
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for (rnd2 = 0; rnd2 < 4; rnd2 ++)
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{
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rnd = MPC_RND (rnd1, rnd2);
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inex_pow = mpc_pow (z, x, y, rnd);
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inex_pow_ui = mpc_pow_ui (t, x, n, rnd);
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if (mpc_cmp (z, t) != 0)
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{
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printf ("mpc_pow and mpc_pow_ui differ for x=");
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mpc_out_str (stdout, 16, 0, x, MPC_RNDNN);
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printf (" n=%li p=%lu rnd=%d\n", n, p, rnd);
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printf ("mpc_pow gives ");
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mpc_out_str (stdout, 16, 0, z, MPC_RNDNN);
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printf ("\nmpc_pow_ui gives ");
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mpc_out_str (stdout, 16, 0, t, MPC_RNDNN);
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printf ("\n");
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exit (1);
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}
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if (inex_pow != inex_pow_ui)
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{
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printf ("mpc_pow and mpc_pow_ui give different flags for x=");
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mpc_out_str (stdout, 16, 0, x, MPC_RNDNN);
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printf (" n=%li p=%lu rnd=%d\n", n, p, rnd);
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printf ("mpc_pow gives %d\n", inex_pow);
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printf ("mpc_pow_ui gives %d\n", inex_pow_ui);
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exit (1);
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}
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}
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mpc_clear (x);
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mpc_clear (z);
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mpc_clear (t);
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}
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mpc_clear (y);
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}
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#define MPC_FUNCTION_CALL \
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P[0].mpc_inex = mpc_pow_ui (P[1].mpc, P[2].mpc, P[3].ui, P[4].mpc_rnd)
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#define MPC_FUNCTION_CALL_REUSE_OP1 \
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P[0].mpc_inex = mpc_pow_ui (P[1].mpc, P[1].mpc, P[3].ui, P[4].mpc_rnd)
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#include "data_check.tpl"
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int
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main (int argc, char *argv[])
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{
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mpc_t z;
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if (argc != 1)
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{
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mpfr_prec_t p;
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long int n, k;
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mpc_t res;
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if (argc != 3 && argc != 4)
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{
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printf ("Usage: tpow_ui precision exponent [k]\n");
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exit (1);
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}
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p = atoi (argv[1]);
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n = atoi (argv[2]);
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MPC_ASSERT (n >= 0);
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k = (argc > 3) ? atoi (argv[3]) : 1;
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MPC_ASSERT (k >= 0);
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mpc_init2 (z, p);
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mpc_init2 (res, p);
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mpfr_const_pi (mpc_realref (z), MPFR_RNDN);
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mpfr_div_2exp (mpc_realref (z), mpc_realref (z), 2, MPFR_RNDN);
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mpfr_const_log2 (mpc_imagref (z), MPFR_RNDN);
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while (k--)
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mpc_pow_ui (res, z, (unsigned long int) n, MPC_RNDNN);
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mpc_clear (z);
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mpc_clear (res);
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return 0;
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}
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test_start ();
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data_check_template ("pow_ui.dsc", "pow_ui.dat");
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compare_mpc_pow (100, 5, 19);
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test_end ();
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return 0;
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}
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