1*d30dc8cbSJohn Marino /* mpc_mul_fr -- Multiply a complex number by a floating-point number.
2*d30dc8cbSJohn Marino
3*d30dc8cbSJohn Marino Copyright (C) 2002, 2008, 2009, 2010, 2011 INRIA
4*d30dc8cbSJohn Marino
5*d30dc8cbSJohn Marino This file is part of GNU MPC.
6*d30dc8cbSJohn Marino
7*d30dc8cbSJohn Marino GNU MPC is free software; you can redistribute it and/or modify it under
8*d30dc8cbSJohn Marino the terms of the GNU Lesser General Public License as published by the
9*d30dc8cbSJohn Marino Free Software Foundation; either version 3 of the License, or (at your
10*d30dc8cbSJohn Marino option) any later version.
11*d30dc8cbSJohn Marino
12*d30dc8cbSJohn Marino GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13*d30dc8cbSJohn Marino WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14*d30dc8cbSJohn Marino FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15*d30dc8cbSJohn Marino more details.
16*d30dc8cbSJohn Marino
17*d30dc8cbSJohn Marino You should have received a copy of the GNU Lesser General Public License
18*d30dc8cbSJohn Marino along with this program. If not, see http://www.gnu.org/licenses/ .
19*d30dc8cbSJohn Marino */
20*d30dc8cbSJohn Marino
21*d30dc8cbSJohn Marino #include "mpc-impl.h"
22*d30dc8cbSJohn Marino
23*d30dc8cbSJohn Marino int
mpc_mul_fr(mpc_ptr a,mpc_srcptr b,mpfr_srcptr c,mpc_rnd_t rnd)24*d30dc8cbSJohn Marino mpc_mul_fr (mpc_ptr a, mpc_srcptr b, mpfr_srcptr c, mpc_rnd_t rnd)
25*d30dc8cbSJohn Marino {
26*d30dc8cbSJohn Marino int inex_re, inex_im;
27*d30dc8cbSJohn Marino mpfr_t real;
28*d30dc8cbSJohn Marino
29*d30dc8cbSJohn Marino if (c == mpc_realref (a))
30*d30dc8cbSJohn Marino /* We have to use a temporary variable. */
31*d30dc8cbSJohn Marino mpfr_init2 (real, MPC_PREC_RE (a));
32*d30dc8cbSJohn Marino else
33*d30dc8cbSJohn Marino real [0] = mpc_realref (a) [0];
34*d30dc8cbSJohn Marino
35*d30dc8cbSJohn Marino inex_re = mpfr_mul (real, mpc_realref(b), c, MPC_RND_RE(rnd));
36*d30dc8cbSJohn Marino inex_im = mpfr_mul (mpc_imagref(a), mpc_imagref(b), c, MPC_RND_IM(rnd));
37*d30dc8cbSJohn Marino mpfr_set (mpc_realref (a), real, GMP_RNDN); /* exact */
38*d30dc8cbSJohn Marino
39*d30dc8cbSJohn Marino if (c == mpc_realref (a))
40*d30dc8cbSJohn Marino mpfr_clear (real);
41*d30dc8cbSJohn Marino
42*d30dc8cbSJohn Marino return MPC_INEX(inex_re, inex_im);
43*d30dc8cbSJohn Marino }
44