arb/mag/get_fmpr.c
2016-04-26 17:20:05 +02:00

31 lines
720 B
C

/*
Copyright (C) 2014 Fredrik Johansson
This file is part of Arb.
Arb is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "mag.h"
void
mag_get_fmpr(fmpr_t x, const mag_t r)
{
if (mag_is_zero(r))
{
fmpr_zero(x);
}
else if (mag_is_inf(r))
{
fmpr_pos_inf(x);
}
else
{
fmpr_set_ui_2exp_si(x, MAG_MAN(r), -MAG_BITS);
_fmpz_add2_fast(fmpr_expref(x), fmpr_expref(x), MAG_EXPREF(r), 0);
}
}