blob: 058003169c6285ab3c2f96ab5170e0115fdc778a (
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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* mpz_init_set_si(dest,val) -- Make a new multiple precision in DEST and
assign VAL to the new number.
Copyright 1991, 1993-1995, 2000-2002, 2012 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library 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.
The GNU MP Library 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 the GNU MP Library. If not, see https://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
void
mpz_init_set_si (mpz_ptr dest, signed long int val)
{
mp_size_t size;
mp_limb_t vl;
ALLOC (dest) = 1;
PTR (dest) = (mp_ptr) (*__gmp_allocate_func) (GMP_LIMB_BYTES);
vl = (mp_limb_t) ABS_CAST (unsigned long int, val);
PTR (dest)[0] = vl & GMP_NUMB_MASK;
size = vl != 0;
#if GMP_NAIL_BITS != 0
if (vl > GMP_NUMB_MAX)
{
MPZ_REALLOC (dest, 2);
PTR (dest)[1] = vl >> GMP_NUMB_BITS;
size = 2;
}
#endif
SIZ (dest) = val >= 0 ? size : -size;
}
|
