arb/acb/exp_invexp.c
2016-04-26 17:20:05 +02:00

57 lines
1.3 KiB
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_exp_invexp(acb_t r, acb_t s, const acb_t z, slong prec)
{
#define a acb_realref(z)
#define b acb_imagref(z)
if (arb_is_zero(b))
{
arb_exp_invexp(acb_realref(r), acb_realref(s), a, prec);
arb_zero(acb_imagref(r));
arb_zero(acb_imagref(s));
}
else if (arb_is_zero(a))
{
arb_sin_cos(acb_imagref(r), acb_realref(r), b, prec);
acb_conj(s, r);
}
else
{
arb_t t, u, v, w;
arb_init(t);
arb_init(u);
arb_init(v);
arb_init(w);
arb_exp_invexp(t, u, a, prec);
arb_sin_cos(v, w, b, prec);
arb_mul(acb_realref(r), t, w, prec);
arb_mul(acb_imagref(r), t, v, prec);
arb_mul(acb_realref(s), u, w, prec);
arb_mul(acb_imagref(s), u, v, prec);
arb_neg(acb_imagref(s), acb_imagref(s));
arb_clear(t);
arb_clear(u);
arb_clear(v);
arb_clear(w);
}
#undef a
#undef b
}