Annotation of OpenXM_contrib/gmp/mpz/cmpabs_ui.c, Revision 1.1.1.2
1.1 maekawa 1: /* mpz_cmpabs_ui.c -- Compare a mpz_t a with an mp_limb_t b. Return positive,
2: zero, or negative based on if a > b, a == b, or a < b.
3:
1.1.1.2 ! ohara 4: Copyright 1991, 1993, 1994, 1995, 1997, 2000, 2001, 2002 Free Software
! 5: Foundation, 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
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
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
16: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17: License for more details.
18:
19: You should have received a copy of the GNU Lesser General Public License
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: mpz_cmpabs_ui (mpz_srcptr u, unsigned long int v_digit)
29: {
1.1.1.2 ! ohara 30: mp_ptr up;
! 31: mp_size_t un;
! 32: mp_limb_t ul;
! 33:
! 34: up = PTR(u);
! 35: un = SIZ(u);
1.1 maekawa 36:
1.1.1.2 ! ohara 37: if (un == 0)
1.1 maekawa 38: return -(v_digit != 0);
39:
1.1.1.2 ! ohara 40: un = ABS (un);
1.1 maekawa 41:
1.1.1.2 ! ohara 42: if (un == 1)
1.1 maekawa 43: {
1.1.1.2 ! ohara 44: ul = up[0];
! 45: if (ul > v_digit)
1.1 maekawa 46: return 1;
1.1.1.2 ! ohara 47: if (ul < v_digit)
1.1 maekawa 48: return -1;
49: return 0;
50: }
1.1.1.2 ! ohara 51:
! 52: #if GMP_NAIL_BITS != 0
! 53: if (v_digit > GMP_NUMB_MAX)
! 54: {
! 55: if (un == 2)
! 56: {
! 57: ul = up[0] + (up[1] << GMP_NUMB_BITS);
! 58:
! 59: if (ul > v_digit)
! 60: return 1;
! 61: if (ul < v_digit)
! 62: return -1;
! 63: return 0;
! 64: }
! 65: }
! 66: #endif
1.1 maekawa 67:
68: return 1;
69: }
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