diff options
author | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:36:36 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:42:26 +0200 |
commit | a89a14ef5da44684a16b204e7a70460cc8c4922a (patch) | |
tree | b23b4c6b155977909ef508fdae2f48d33d802813 /vendor/gmp-6.3.0/mpq/neg.c | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/mpq/neg.c')
-rw-r--r-- | vendor/gmp-6.3.0/mpq/neg.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpq/neg.c b/vendor/gmp-6.3.0/mpq/neg.c new file mode 100644 index 0000000..8fda41c --- /dev/null +++ b/vendor/gmp-6.3.0/mpq/neg.c @@ -0,0 +1,57 @@ +/* mpq_neg -- negate a rational. + +Copyright 2000, 2001, 2012 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 either: + + * 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. + +or + + * the GNU General Public License as published by the Free Software + Foundation; either version 2 of the License, or (at your option) any + later version. + +or both in parallel, as here. + +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 General Public License +for more details. + +You should have received copies of the GNU General Public License and the +GNU Lesser General Public License along with the GNU MP Library. If not, +see https://www.gnu.org/licenses/. */ + +#define __GMP_FORCE_mpq_neg 1 + +#include "gmp-impl.h" + + +void +mpq_neg (mpq_ptr dst, mpq_srcptr src) +{ + mp_size_t num_size = SIZ(NUM(src)); + + if (src != dst) + { + mp_size_t size; + mp_ptr dp; + + size = ABS(num_size); + dp = MPZ_NEWALLOC (NUM(dst), size); + MPN_COPY (dp, PTR(NUM(src)), size); + + size = SIZ(DEN(src)); + dp = MPZ_NEWALLOC (DEN(dst), size); + SIZ(DEN(dst)) = size; + MPN_COPY (dp, PTR(DEN(src)), size); + } + + SIZ(NUM(dst)) = -num_size; +} |