mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
6bf072eb59
This will allow us to not loose the julia session on error. See also https://github.com/wbhart/flint2/pull/243
53 lines
1.1 KiB
C
53 lines
1.1 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 "arf.h"
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void
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arf_get_fmpq(fmpq_t y, const arf_t x)
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{
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if (arf_is_zero(x))
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{
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fmpq_zero(y);
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}
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else if (arf_is_special(x) || !ARF_IS_LAGOM(x))
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{
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flint_printf("exception: arf_get_fmpq: cannot convert to rational\n");
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flint_abort();
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}
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else
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{
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fmpz_t man, exp;
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slong e;
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fmpz_init(man);
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fmpz_init(exp);
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arf_get_fmpz_2exp(man, exp, x);
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e = *exp;
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fmpz_set_ui(fmpq_denref(y), UWORD(1));
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if (e >= 0)
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{
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fmpz_mul_2exp(fmpq_numref(y), man, e);
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}
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else
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{
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fmpz_set(fmpq_numref(y), man);
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fmpz_mul_2exp(fmpq_denref(y), fmpq_denref(y), -e);
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}
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fmpz_clear(man);
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fmpz_clear(exp);
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}
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}
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