1/* mpf_set_z -- Assign a float from an integer.
2
3Copyright 1996, 2001, 2004 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library.
6
7The GNU MP Library is free software; you can redistribute it and/or modify
8it under the terms of the GNU Lesser General Public License as published by
9the Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12The GNU MP Library is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
15License for more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
19
20#include "gmp.h"
21#include "gmp-impl.h"
22
23void
24mpf_set_z (mpf_ptr r, mpz_srcptr u)
25{
26  mp_ptr rp, up;
27  mp_size_t size, asize;
28  mp_size_t prec;
29
30  prec = PREC (r) + 1;
31  size = SIZ (u);
32  asize = ABS (size);
33  rp = PTR (r);
34  up = PTR (u);
35
36  EXP (r) = asize;
37
38  if (asize > prec)
39    {
40      up += asize - prec;
41      asize = prec;
42    }
43
44  SIZ (r) = size >= 0 ? asize : -asize;
45  MPN_COPY (rp, up, asize);
46}
47