--- /dev/null
+/* mpq_neg -- negate a rational.
+
+Copyright 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
+
+#define __GMP_FORCE_mpq_neg 1
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+void
+mpq_neg (mpq_ptr dst, mpq_srcptr src)
+{
+ mp_size_t num_size = src->_mp_num._mp_size;
+
+ if (src != dst)
+ {
+ mp_size_t num_abs_size = ABS(num_size);
+ mp_size_t den_size = src->_mp_den._mp_size;
+
+ MPZ_REALLOC (mpq_numref(dst), num_abs_size);
+ MPZ_REALLOC (mpq_denref(dst), den_size);
+
+ MPN_COPY (dst->_mp_num._mp_d, src->_mp_num._mp_d, num_abs_size);
+ MPN_COPY (dst->_mp_den._mp_d, src->_mp_den._mp_d, den_size);
+
+ dst->_mp_den._mp_size = den_size;
+ }
+
+ dst->_mp_num._mp_size = -num_size;
+}