mirror of
https://github.com/vale981/arb
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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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/*=============================================================================
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2013 Fredrik Johansson
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******************************************************************************/
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#include "fmprb.h"
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void
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fmprb_hypot(fmprb_t z, const fmprb_t x, const fmprb_t y, long prec)
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{
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if (fmprb_is_zero(y))
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{
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fmprb_abs(z, x);
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}
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else if (fmprb_is_zero(x))
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{
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fmprb_abs(z, y);
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}
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else
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{
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fmprb_t t;
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fmprb_init(t);
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fmprb_mul(t, x, x, prec + 4);
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fmprb_mul(z, y, y, prec + 4);
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fmprb_add(t, t, z, prec + 4);
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fmprb_sqrtpos(z, t, prec);
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fmprb_clear(t);
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}
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}
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