xref: /dragonfly/contrib/mpc/src/ui_ui_sub.c (revision 25a2db75)
1 /* mpc_ui_ui_sub -- Subtract a complex number from another one given
2    implicitly by its real and imaginary parts of type unsigned long int.
3 
4 Copyright (C) 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 int
25 mpc_ui_ui_sub (mpc_ptr rop, unsigned long int re, unsigned long int im,
26                mpc_srcptr op, mpc_rnd_t rnd)
27 {
28    int inex_re, inex_im;
29 
30    inex_re = mpfr_ui_sub (mpc_realref (rop), re, mpc_realref (op), MPC_RND_RE (rnd));
31    inex_im = mpfr_ui_sub (mpc_imagref (rop), im, mpc_imagref (op), MPC_RND_IM (rnd));
32 
33    return MPC_INEX (inex_re, inex_im);
34 }
35