mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
41 lines
1 KiB
C
41 lines
1 KiB
C
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/*
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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_get_abs_lbound_arf(arf_t u, const acb_t z, slong prec)
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{
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if (arb_is_zero(acb_imagref(z)))
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{
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arb_get_abs_lbound_arf(u, acb_realref(z), prec);
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}
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else if (arb_is_zero(acb_realref(z)))
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{
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arb_get_abs_lbound_arf(u, acb_imagref(z), prec);
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}
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else
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{
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arf_t v;
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arf_init(v);
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arb_get_abs_lbound_arf(u, acb_realref(z), prec);
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arb_get_abs_lbound_arf(v, acb_imagref(z), prec);
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arf_mul(u, u, u, prec, ARF_RND_DOWN);
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arf_mul(v, v, v, prec, ARF_RND_DOWN);
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arf_add(u, u, v, prec, ARF_RND_DOWN);
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arf_sqrt(u, u, prec, ARF_RND_DOWN);
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arf_clear(v);
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}
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}
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