Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpz/cmp_si.c, Revision 1.1
1.1 ! takayama 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:
! 4: Copyright (C) 1991, 1993, 1994, 1995 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 the GNU Library General Public License as published by
! 10: the Free Software Foundation; either version 2 of the License, or (at your
! 11: option) any later version.
! 12:
! 13: The GNU MP Library is distributed in the hope that it will be useful, but
! 14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 15: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
! 16: License for more details.
! 17:
! 18: You should have received a copy of the GNU Library General Public License
! 19: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 21: MA 02111-1307, USA. */
! 22:
! 23: #include "gmp.h"
! 24: #include "gmp-impl.h"
! 25:
! 26: /* gmp.h defines a macro for mpz_cmp_si. */
! 27: #undef mpz_cmp_si
! 28:
! 29: int
! 30: #if __STDC__
! 31: mpz_cmp_si (mpz_srcptr u, signed long int v_digit)
! 32: #else
! 33: mpz_cmp_si (u, v_digit)
! 34: mpz_srcptr u;
! 35: signed long int v_digit;
! 36: #endif
! 37: {
! 38: mp_size_t usize = u->_mp_size;
! 39: mp_size_t vsize;
! 40: mp_limb_t u_digit;
! 41:
! 42: vsize = 0;
! 43: if (v_digit > 0)
! 44: vsize = 1;
! 45: else if (v_digit < 0)
! 46: {
! 47: vsize = -1;
! 48: v_digit = -v_digit;
! 49: }
! 50:
! 51: if (usize != vsize)
! 52: return usize - vsize;
! 53:
! 54: if (usize == 0)
! 55: return 0;
! 56:
! 57: u_digit = u->_mp_d[0];
! 58:
! 59: if (u_digit == v_digit)
! 60: return 0;
! 61:
! 62: if (u_digit > v_digit)
! 63: return usize;
! 64: else
! 65: return -usize;
! 66: }
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