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