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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* mpz_cmp_si(u,v) -- Compare an integer U with a single-word int V.
Return positive, zero, or negative based on if U > V, U == V, or U < V.
Copyright (C) 1991, 1993, 1994, 1995, 1996, 2000 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 Library General Public License as published by
the Free Software Foundation; either version 2 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "gmp.h"
#include "gmp-impl.h"
int
#if __STDC__
_mpz_cmp_si (mpz_srcptr u, signed long int v_digit)
#else
_mpz_cmp_si (u, v_digit)
mpz_srcptr u;
signed long int v_digit;
#endif
{
mp_size_t usize = u->_mp_size;
mp_size_t vsize;
mp_limb_t u_digit;
vsize = 0;
if (v_digit > 0)
vsize = 1;
else if (v_digit < 0)
{
vsize = -1;
v_digit = -v_digit;
}
if (usize != vsize)
return usize - vsize;
if (usize == 0)
return 0;
u_digit = u->_mp_d[0];
if (u_digit == (mp_limb_t) (unsigned long) v_digit)
return 0;
if (u_digit > (mp_limb_t) (unsigned long) v_digit)
return usize;
else
return -usize;
}
|
