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Annotation of OpenXM_contrib/gmp/mpf/swap.c, Revision 1.1.1.1

1.1       maekawa     1: /* mpf_swap (U, V) -- Swap U and V.
                      2:
                      3: Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the GNU MP Library.
                      6:
                      7: The GNU MP Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Lesser General Public License as published by
                      9: the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The GNU MP Library is distributed in the hope that it will be useful, but
                     13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Lesser General Public License
                     18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: MA 02111-1307, USA. */
                     21:
                     22: #include "gmp.h"
                     23: #include "gmp-impl.h"
                     24:
                     25: void
                     26: #if __STDC__
                     27: mpf_swap (mpf_ptr u, mpf_ptr v)
                     28: #else
                     29: mpf_swap (u, v)
                     30:      mpf_ptr u;
                     31:      mpf_ptr v;
                     32: #endif
                     33: {
                     34:   mp_ptr up, vp;
                     35:   mp_size_t usize, vsize;
                     36:   mp_size_t uprec, vprec;
                     37:   mp_exp_t  uexp, vexp;
                     38:
                     39:   uprec = u->_mp_prec;
                     40:   vprec = v->_mp_prec;
                     41:   v->_mp_prec = uprec;
                     42:   u->_mp_prec = vprec;
                     43:
                     44:   usize = u->_mp_size;
                     45:   vsize = v->_mp_size;
                     46:   v->_mp_size = usize;
                     47:   u->_mp_size = vsize;
                     48:
                     49:   uexp = u->_mp_exp;
                     50:   vexp = v->_mp_exp;
                     51:   v->_mp_exp = uexp;
                     52:   u->_mp_exp = vexp;
                     53:
                     54:   up = u->_mp_d;
                     55:   vp = v->_mp_d;
                     56:   v->_mp_d = up;
                     57:   u->_mp_d = vp;
                     58: }