mirror of
https://github.com/vale981/arb
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57 lines
1 KiB
C
57 lines
1 KiB
C
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/*
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Copyright (C) 2015 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 "flint/double_extras.h"
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#include "mag.h"
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void
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mag_set_d(mag_t z, double c)
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{
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if (c < 0.0)
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c = -c;
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if (c == 0.0)
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{
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mag_zero(z);
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}
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else if ((c != c) || c == D_INF)
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{
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mag_inf(z);
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}
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else
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{
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_fmpz_demote(MAG_EXPREF(z));
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MAG_SET_D_2EXP(MAG_MAN(z), MAG_EXP(z), c, 0);
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}
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}
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void
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mag_set_d_lower(mag_t z, double c)
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{
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if (c < 0.0)
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c = -c;
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if (c == 0.0 || (c != c))
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{
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mag_zero(z);
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}
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else if (c == D_INF)
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{
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mag_inf(z);
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}
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else
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{
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_fmpz_demote(MAG_EXPREF(z));
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MAG_SET_D_2EXP_LOWER(MAG_MAN(z), MAG_EXP(z), c, 0);
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}
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}
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