Annotation of OpenXM_contrib/gmp/mpz/cmp_si.c, Revision 1.1.1.2
1.1 maekawa 1: /* mpz_cmp_si(u,v) -- Compare an integer U with a single-word int V.
2: Return positive, zero, or negative based on if U > V, U == V, or U < V.
3:
1.1.1.2 ! maekawa 4: Copyright (C) 1991, 1993, 1994, 1995, 1996, 2000 Free Software Foundation,
! 5: Inc.
1.1 maekawa 6:
7: This file is part of the GNU MP Library.
8:
9: The GNU MP Library is free software; you can redistribute it and/or modify
1.1.1.2 ! maekawa 10: it under the terms of the GNU Lesser General Public License as published by
! 11: the Free Software Foundation; either version 2.1 of the License, or (at your
1.1 maekawa 12: option) any later version.
13:
14: The GNU MP Library is distributed in the hope that it will be useful, but
15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
1.1.1.2 ! maekawa 16: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
1.1 maekawa 17: License for more details.
18:
1.1.1.2 ! maekawa 19: You should have received a copy of the GNU Lesser General Public License
1.1 maekawa 20: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22: MA 02111-1307, USA. */
23:
24: #include "gmp.h"
25: #include "gmp-impl.h"
26:
27: int
28: #if __STDC__
1.1.1.2 ! maekawa 29: _mpz_cmp_si (mpz_srcptr u, signed long int v_digit)
1.1 maekawa 30: #else
1.1.1.2 ! maekawa 31: _mpz_cmp_si (u, v_digit)
1.1 maekawa 32: mpz_srcptr u;
33: signed long int v_digit;
34: #endif
35: {
36: mp_size_t usize = u->_mp_size;
37: mp_size_t vsize;
38: mp_limb_t u_digit;
39:
40: vsize = 0;
41: if (v_digit > 0)
42: vsize = 1;
43: else if (v_digit < 0)
44: {
45: vsize = -1;
46: v_digit = -v_digit;
47: }
48:
49: if (usize != vsize)
50: return usize - vsize;
51:
52: if (usize == 0)
53: return 0;
54:
55: u_digit = u->_mp_d[0];
56:
1.1.1.2 ! maekawa 57: if (u_digit == (mp_limb_t) (unsigned long) v_digit)
1.1 maekawa 58: return 0;
59:
1.1.1.2 ! maekawa 60: if (u_digit > (mp_limb_t) (unsigned long) v_digit)
1.1 maekawa 61: return usize;
62: else
63: return -usize;
64: }
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