summaryrefslogtreecommitdiff
path: root/mpc/src/sub_ui.c
blob: 561c46967666d03ff5c430885fb001e421955fc2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/* mpc_sub_ui -- Add a complex number and an unsigned long int.

Copyright (C) 2002, 2009, 2011 INRIA

This file is part of GNU MPC.

GNU MPC is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.

You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see http://www.gnu.org/licenses/ .
*/

#include "mpc-impl.h"

/* return 0 iff both the real and imaginary parts are exact */
int
mpc_sub_ui (mpc_ptr a, mpc_srcptr b, unsigned long int c, mpc_rnd_t rnd)
{
  int inex_re, inex_im;

  inex_re = mpfr_sub_ui (mpc_realref(a), mpc_realref(b), c, MPC_RND_RE(rnd));
  inex_im = mpfr_set (mpc_imagref(a), mpc_imagref(b), MPC_RND_IM(rnd));

  return MPC_INEX(inex_re, inex_im);
}