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Annotation of OpenXM_contrib/gmp/mpz/cmp.c, Revision 1.1.1.1

1.1       maekawa     1: /* mpz_cmp(u,v) -- Compare U, V.  Return postive, zero, or negative
                      2:    based on if U > V, U == V, or U < V.
                      3:
                      4: Copyright (C) 1991, 1993, 1994, 1996 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: #ifdef BERKELEY_MP
                     24: #include "mp.h"
                     25: #endif
                     26: #include "gmp.h"
                     27: #include "gmp-impl.h"
                     28:
                     29: #ifndef BERKELEY_MP
                     30: int
                     31: #if __STDC__
                     32: mpz_cmp (mpz_srcptr u, mpz_srcptr v)
                     33: #else
                     34: mpz_cmp (u, v)
                     35:      mpz_srcptr u;
                     36:      mpz_srcptr v;
                     37: #endif
                     38: #else /* BERKELEY_MP */
                     39: int
                     40: #if __STDC__
                     41: mcmp (mpz_srcptr u, mpz_srcptr v)
                     42: #else
                     43: mcmp (u, v)
                     44:      mpz_srcptr u;
                     45:      mpz_srcptr v;
                     46: #endif
                     47: #endif /* BERKELEY_MP */
                     48: {
                     49:   mp_size_t usize = u->_mp_size;
                     50:   mp_size_t vsize = v->_mp_size;
                     51:   mp_size_t size;
                     52:   mp_srcptr up, vp;
                     53:   int cmp;
                     54:
                     55:   if (usize != vsize)
                     56:     return usize - vsize;
                     57:
                     58:   if (usize == 0)
                     59:     return 0;
                     60:
                     61:   size = ABS (usize);
                     62:
                     63:   up = u->_mp_d;
                     64:   vp = v->_mp_d;
                     65:
                     66:   cmp = mpn_cmp (up, vp, size);
                     67:
                     68:   if (cmp == 0)
                     69:     return 0;
                     70:
                     71:   if ((cmp < 0) == (usize < 0))
                     72:     return 1;
                     73:   else
                     74:     return -1;
                     75: }