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

1.1       ohara       1: /* mpfr_swap (U, V) -- Swap U and V.
                      2:
                      3: Copyright 2000, 2001 Free Software Foundation, Inc.
                      4:
                      5: This file is part of the MPFR Library.
                      6:
                      7: The MPFR 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 MPFR 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 MPFR 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 "mpfr.h"
                     24: #include "mpfr-impl.h"
                     25:
                     26: void
                     27: mpfr_swap (mpfr_ptr u, mpfr_ptr v)
                     28: {
                     29:   mp_ptr up, vp;
                     30:   mp_size_t usize, vsize;
                     31:   mp_prec_t uprec, vprec;
                     32:   mp_exp_t  uexp, vexp;
                     33:
                     34:   uprec = MPFR_PREC(u);
                     35:   vprec = MPFR_PREC(v);
                     36:   MPFR_PREC(v) = uprec;
                     37:   MPFR_PREC(u) = vprec;
                     38:
                     39:   usize = MPFR_SIZE(u);
                     40:   vsize = MPFR_SIZE(v);
                     41:   MPFR_SIZE(v) = usize;
                     42:   MPFR_SIZE(u) = vsize;
                     43:
                     44:   uexp = MPFR_EXP(u);
                     45:   vexp = MPFR_EXP(v);
                     46:   MPFR_EXP(v) = uexp;
                     47:   MPFR_EXP(u) = vexp;
                     48:
                     49:   up = MPFR_MANT(u);
                     50:   vp = MPFR_MANT(v);
                     51:   MPFR_MANT(v) = up;
                     52:   MPFR_MANT(u) = vp;
                     53: }