1 /* mpc_cosh -- hyperbolic cosine of a complex number.
3 Copyright (C) 2008, 2009, 2011 INRIA
5 This file is part of GNU MPC.
7 GNU MPC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU Lesser General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
12 GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
17 You should have received a copy of the GNU Lesser General Public License
18 along with this program. If not, see http://www.gnu.org/licenses/ .
24 mpc_cosh (mpc_ptr rop, mpc_srcptr op, mpc_rnd_t rnd)
26 /* cosh(op) = cos(i*op) */
29 /* z = i*op without copying significand */
30 mpc_realref (z)[0] = mpc_imagref (op)[0];
31 mpc_imagref (z)[0] = mpc_realref (op)[0];
32 MPFR_CHANGE_SIGN (mpc_realref (z));
34 return mpc_cos (rop, z, rnd);