xref: /netbsd-src/external/lgpl3/gmp/dist/mpz/iset_d.c (revision 2f62cc9c12bc202c40224f32c879f81443fee079)
1 /* mpz_init_set_d(integer, val) -- Initialize and assign INTEGER with a double
2    value VAL.
3 
4 Copyright 1996, 2000, 2001, 2012, 2015 Free Software Foundation, Inc.
5 
6 This file is part of the GNU MP Library.
7 
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of either:
10 
11   * the GNU Lesser General Public License as published by the Free
12     Software Foundation; either version 3 of the License, or (at your
13     option) any later version.
14 
15 or
16 
17   * the GNU General Public License as published by the Free Software
18     Foundation; either version 2 of the License, or (at your option) any
19     later version.
20 
21 or both in parallel, as here.
22 
23 The GNU MP Library is distributed in the hope that it will be useful, but
24 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
25 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
26 for more details.
27 
28 You should have received copies of the GNU General Public License and the
29 GNU Lesser General Public License along with the GNU MP Library.  If not,
30 see https://www.gnu.org/licenses/.  */
31 
32 #include "gmp-impl.h"
33 
34 void
35 mpz_init_set_d (mpz_ptr dest, double val)
36 {
37   static const mp_limb_t dummy_limb=0xc1a0;
38 
39   ALLOC (dest) = 0;
40   SIZ (dest) = 0;
41   PTR (dest) = (mp_ptr) &dummy_limb;
42   mpz_set_d (dest, val);
43 }
44