diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpf/iset.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpf/iset.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpf/iset.c b/Build/source/libs/gmp/gmp-6.0.0/mpf/iset.c new file mode 100644 index 00000000000..c8c35e50e9f --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpf/iset.c @@ -0,0 +1,62 @@ +/* mpf_init_set -- Initialize a float and assign it from another float. + +Copyright 1993-1995, 2000, 2001, 2004 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 +mpf_init_set (mpf_ptr r, mpf_srcptr s) +{ + mp_ptr rp, sp; + mp_size_t ssize, size; + mp_size_t prec; + + prec = __gmp_default_fp_limb_precision; + r->_mp_d = (mp_ptr) (*__gmp_allocate_func) ((size_t) (prec + 1) * GMP_LIMB_BYTES); + r->_mp_prec = prec; + + prec++; /* lie not to lose precision in assignment */ + ssize = s->_mp_size; + size = ABS (ssize); + + rp = r->_mp_d; + sp = s->_mp_d; + + if (size > prec) + { + sp += size - prec; + size = prec; + } + + r->_mp_exp = s->_mp_exp; + r->_mp_size = ssize >= 0 ? size : -size; + + MPN_COPY (rp, sp, size); +} |