mirror of
https://github.com/vale981/arb
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36 lines
1,014 B
C
36 lines
1,014 B
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 "acb.h"
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void
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acb_submul(acb_t z, const acb_t x, const acb_t y, slong prec)
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{
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if (arb_is_zero(acb_imagref(y)))
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{
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arb_submul(acb_imagref(z), acb_imagref(x), acb_realref(y), prec);
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arb_submul(acb_realref(z), acb_realref(x), acb_realref(y), prec);
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}
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else if (arb_is_zero(acb_imagref(x)))
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{
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arb_submul(acb_imagref(z), acb_imagref(y), acb_realref(x), prec);
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arb_submul(acb_realref(z), acb_realref(y), acb_realref(x), prec);
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}
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else
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{
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acb_t t;
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acb_init(t);
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acb_mul(t, x, y, prec);
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acb_sub(z, z, t, prec);
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acb_clear(t);
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}
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}
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