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Annotation of OpenXM_contrib/gmp/mpz/cmp_ui.c, Revision 1.1.1.2

1.1       maekawa     1: /* mpz_cmp_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 ! maekawa     4: Copyright (C) 1991, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
1.1       maekawa     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
1.1.1.2 ! maekawa     9: it under the terms of the GNU Lesser General Public License as published by
        !            10: the Free Software Foundation; either version 2.1 of the License, or (at your
1.1       maekawa    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
1.1.1.2 ! maekawa    15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
1.1       maekawa    16: License for more details.
                     17:
1.1.1.2 ! maekawa    18: You should have received a copy of the GNU Lesser General Public License
1.1       maekawa    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: int
                     27: #if __STDC__
1.1.1.2 ! maekawa    28: _mpz_cmp_ui (mpz_srcptr u, unsigned long int v_digit)
1.1       maekawa    29: #else
1.1.1.2 ! maekawa    30: _mpz_cmp_ui (u, v_digit)
1.1       maekawa    31:      mpz_srcptr u;
                     32:      unsigned long int v_digit;
                     33: #endif
                     34: {
                     35:   mp_size_t usize = u->_mp_size;
                     36:
                     37:   if (usize == 0)
                     38:     return -(v_digit != 0);
                     39:
                     40:   if (usize == 1)
                     41:     {
                     42:       mp_limb_t u_digit;
                     43:
                     44:       u_digit = u->_mp_d[0];
                     45:       if (u_digit > v_digit)
                     46:        return 1;
                     47:       if (u_digit < v_digit)
                     48:        return -1;
                     49:       return 0;
                     50:     }
                     51:
                     52:   return (usize > 0) ? 1 : -1;
                     53: }