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https://github.com/vale981/arb
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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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Copyright (C) 2012 Fredrik Johansson
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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 it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "fmpr.h"
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void
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fmpr_randtest(fmpr_t x, flint_rand_t state, slong bits, slong mag_bits)
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{
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fmpz_randtest(fmpr_manref(x), state, bits);
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fmpz_randtest(fmpr_expref(x), state, mag_bits);
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fmpz_sub_ui(fmpr_expref(x), fmpr_expref(x), fmpz_bits(fmpr_manref(x)));
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_fmpr_normalise(fmpr_manref(x), fmpr_expref(x), bits, FMPR_RND_DOWN);
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}
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void
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fmpr_randtest_not_zero(fmpr_t x, flint_rand_t state, slong bits, slong mag_bits)
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{
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fmpz_randtest_not_zero(fmpr_manref(x), state, bits);
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fmpz_randtest(fmpr_expref(x), state, mag_bits);
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fmpz_sub_ui(fmpr_expref(x), fmpr_expref(x), fmpz_bits(fmpr_manref(x)));
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_fmpr_normalise(fmpr_manref(x), fmpr_expref(x), bits, FMPR_RND_DOWN);
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}
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void
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fmpr_randtest_special(fmpr_t x, flint_rand_t state, slong bits, slong mag_bits)
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{
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switch (n_randint(state, 32))
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{
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case 0:
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fmpr_zero(x);
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break;
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case 1:
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fmpr_pos_inf(x);
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break;
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case 2:
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fmpr_neg_inf(x);
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break;
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case 3:
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fmpr_nan(x);
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break;
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default:
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fmpr_randtest_not_zero(x, state, bits, mag_bits);
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}
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}
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