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Annotation of OpenXM_contrib/gmp/mpq/set_si.c, Revision 1.1.1.3

1.1       maekawa     1: /* mpq_set_si(dest,ulong_num,ulong_den) -- Set DEST to the retional number
                      2:    ULONG_NUM/ULONG_DEN.
                      3:
1.1.1.3 ! ohara       4: Copyright 1991, 1994, 1995, 2001 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: void
                     27: mpq_set_si (MP_RAT *dest, signed long int num, unsigned long int den)
                     28: {
                     29:   unsigned long int abs_num;
                     30:
                     31:   abs_num = ABS (num);
                     32:
                     33:   if (num == 0)
                     34:     {
                     35:       /* Canonicalize 0/d to 0/1.  */
                     36:       den = 1;
                     37:       dest->_mp_num._mp_size = 0;
                     38:     }
                     39:   else
                     40:     {
                     41:       dest->_mp_num._mp_d[0] = abs_num;
                     42:       dest->_mp_num._mp_size = num > 0 ? 1 : -1;
                     43:     }
                     44:
                     45:   dest->_mp_den._mp_d[0] = den;
1.1.1.3 ! ohara      46:   dest->_mp_den._mp_size = (den != 0);
1.1       maekawa    47: }