mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
44 lines
1 KiB
C
44 lines
1 KiB
C
/*
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Copyright (C) 2014 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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int
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arf_neg_round(arf_t y, const arf_t x, slong prec, arf_rnd_t rnd)
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{
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if (arf_is_special(x))
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{
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arf_neg(y, x);
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return 0;
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}
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else
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{
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int inexact;
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slong fix;
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mp_size_t xn;
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mp_srcptr xptr;
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if (y == x)
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{
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ARF_NEG(y);
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return arf_set_round(y, y, prec, rnd);
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}
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else
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{
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ARF_GET_MPN_READONLY(xptr, xn, x);
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inexact = _arf_set_round_mpn(y, &fix, xptr, xn,
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!ARF_SGNBIT(x), prec, rnd);
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_fmpz_add_fast(ARF_EXPREF(y), ARF_EXPREF(x), fix);
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return inexact;
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}
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}
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}
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