diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpq/set_si.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpq/set_si.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpq/set_si.c b/Build/source/libs/gmp/gmp-6.0.0/mpq/set_si.c new file mode 100644 index 00000000000..0a10b3048d1 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpq/set_si.c @@ -0,0 +1,65 @@ +/* mpq_set_si(dest,ulong_num,ulong_den) -- Set DEST to the rational number + ULONG_NUM/ULONG_DEN. + +Copyright 1991, 1994, 1995, 2001, 2003 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/. */ + +#include "gmp.h" +#include "gmp-impl.h" + +void +mpq_set_si (mpq_t dest, signed long int num, unsigned long int den) +{ + unsigned long int abs_num; + + if (GMP_NUMB_BITS < BITS_PER_ULONG) + { + if (num == 0) /* Canonicalize 0/d to 0/1. */ + den = 1; + mpz_set_si (mpq_numref (dest), num); + mpz_set_ui (mpq_denref (dest), den); + return; + } + + abs_num = ABS_CAST (unsigned long, num); + + if (num == 0) + { + /* Canonicalize 0/d to 0/1. */ + den = 1; + SIZ(NUM(dest)) = 0; + } + else + { + PTR(NUM(dest))[0] = abs_num; + SIZ(NUM(dest)) = num > 0 ? 1 : -1; + } + + PTR(DEN(dest))[0] = den; + SIZ(DEN(dest)) = (den != 0); +} |