mirror of
https://github.com/vale981/arb
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39 lines
938 B
C
39 lines
938 B
C
/*
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Copyright (C) 2018 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_real_max(acb_t res, const acb_t x, const acb_t y, int analytic, slong prec)
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{
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arb_t t;
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if (!acb_is_finite(x) || !acb_is_finite(y))
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{
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acb_indeterminate(res);
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return;
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}
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arb_init(t);
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arb_sub(t, acb_realref(x), acb_realref(y), prec);
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if (arb_is_positive(t))
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acb_set_round(res, x, prec);
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else if (arb_is_negative(t))
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acb_set_round(res, y, prec);
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else if (!analytic)
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acb_union(res, x, y, prec);
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else
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acb_indeterminate(res);
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arb_clear(t);
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}
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