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