mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*=============================================================================
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This file is part of ARB.
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ARB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2012 Fredrik Johansson
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******************************************************************************/
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#include "fmprb.h"
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void
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fmprb_randtest_exact(fmprb_t x, flint_rand_t state, long prec, long mag_bits)
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{
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fmpr_randtest(fmprb_midref(x), state, prec, mag_bits);
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fmpr_zero(fmprb_radref(x));
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}
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void
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fmprb_randtest_wide(fmprb_t x, flint_rand_t state, long prec, long mag_bits)
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{
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fmpr_randtest(fmprb_midref(x), state, prec, mag_bits);
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fmpr_randtest(fmprb_radref(x), state, FMPRB_RAD_PREC, mag_bits);
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fmpr_abs(fmprb_radref(x), fmprb_radref(x));
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}
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void
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fmprb_randtest_precise(fmprb_t x, flint_rand_t state, long prec, long mag_bits)
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{
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fmpr_randtest(fmprb_midref(x), state, prec, mag_bits);
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if (fmpr_is_zero(fmprb_midref(x)) || (n_randint(state, 8) == 0))
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{
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fmpr_zero(fmprb_radref(x));
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}
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else
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{
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fmpz_randtest_not_zero(fmpr_manref(fmprb_radref(x)), state, FMPRB_RAD_PREC);
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fmpz_abs(fmpr_manref(fmprb_radref(x)), fmpr_manref(fmprb_radref(x)));
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fmpz_sub_ui(fmpr_expref(fmprb_radref(x)), fmpr_expref(fmprb_midref(x)), prec + FMPRB_RAD_PREC);
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}
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}
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void
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fmprb_randtest(fmprb_t x, flint_rand_t state, long prec, long mag_bits)
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{
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switch (n_randint(state, 8))
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{
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case 0:
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fmprb_randtest_exact(x, state, prec, mag_bits);
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break;
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case 1:
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fmprb_randtest_wide(x, state, prec, mag_bits);
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break;
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default:
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fmprb_randtest_precise(x, state, prec, mag_bits);
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}
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}
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