14a238c70SJohn Marino /* mpfr_swap (U, V) -- Swap U and V.
24a238c70SJohn Marino
3*ab6d115fSJohn Marino Copyright 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4*ab6d115fSJohn Marino Contributed by the AriC and Caramel projects, INRIA.
54a238c70SJohn Marino
64a238c70SJohn Marino This file is part of the GNU MPFR Library.
74a238c70SJohn Marino
84a238c70SJohn Marino The GNU MPFR Library is free software; you can redistribute it and/or modify
94a238c70SJohn Marino it under the terms of the GNU Lesser General Public License as published by
104a238c70SJohn Marino the Free Software Foundation; either version 3 of the License, or (at your
114a238c70SJohn Marino option) any later version.
124a238c70SJohn Marino
134a238c70SJohn Marino The GNU MPFR Library is distributed in the hope that it will be useful, but
144a238c70SJohn Marino WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
154a238c70SJohn Marino or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
164a238c70SJohn Marino License for more details.
174a238c70SJohn Marino
184a238c70SJohn Marino You should have received a copy of the GNU Lesser General Public License
194a238c70SJohn Marino along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
204a238c70SJohn Marino http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
214a238c70SJohn Marino 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
224a238c70SJohn Marino
234a238c70SJohn Marino #include "mpfr-impl.h"
244a238c70SJohn Marino
254a238c70SJohn Marino /* Using memcpy is a few slower than swapping by hand. */
264a238c70SJohn Marino
274a238c70SJohn Marino void
mpfr_swap(mpfr_ptr u,mpfr_ptr v)284a238c70SJohn Marino mpfr_swap (mpfr_ptr u, mpfr_ptr v)
294a238c70SJohn Marino {
304a238c70SJohn Marino mpfr_prec_t p1, p2;
314a238c70SJohn Marino mpfr_sign_t s1, s2;
324a238c70SJohn Marino mpfr_exp_t e1, e2;
334a238c70SJohn Marino mp_limb_t *m1, *m2;
344a238c70SJohn Marino
354a238c70SJohn Marino p1 = MPFR_PREC(u);
364a238c70SJohn Marino p2 = MPFR_PREC(v);
374a238c70SJohn Marino MPFR_PREC(v) = p1;
384a238c70SJohn Marino MPFR_PREC(u) = p2;
394a238c70SJohn Marino
404a238c70SJohn Marino s1 = MPFR_SIGN(u);
414a238c70SJohn Marino s2 = MPFR_SIGN(v);
424a238c70SJohn Marino MPFR_SIGN(v) = s1;
434a238c70SJohn Marino MPFR_SIGN(u) = s2;
444a238c70SJohn Marino
454a238c70SJohn Marino e1 = MPFR_EXP(u);
464a238c70SJohn Marino e2 = MPFR_EXP(v);
474a238c70SJohn Marino MPFR_EXP(v) = e1;
484a238c70SJohn Marino MPFR_EXP(u) = e2;
494a238c70SJohn Marino
504a238c70SJohn Marino m1 = MPFR_MANT(u);
514a238c70SJohn Marino m2 = MPFR_MANT(v);
524a238c70SJohn Marino MPFR_MANT(v) = m1;
534a238c70SJohn Marino MPFR_MANT(u) = m2;
544a238c70SJohn Marino }
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