mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
32 lines
728 B
C
32 lines
728 B
C
/*
|
|
Copyright (C) 2015 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 "acb.h"
|
|
|
|
void
|
|
acb_acos(acb_t res, const acb_t z, slong prec)
|
|
{
|
|
if (acb_is_one(z))
|
|
{
|
|
acb_zero(res);
|
|
}
|
|
else
|
|
{
|
|
acb_t t;
|
|
acb_init(t);
|
|
acb_asin(res, z, prec);
|
|
acb_const_pi(t, prec);
|
|
acb_mul_2exp_si(t, t, -1);
|
|
acb_sub(res, t, res, prec);
|
|
acb_clear(t);
|
|
}
|
|
}
|
|
|