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/mpf/iset_si.c | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/mpf/iset_si.c')
-rw-r--r-- | vendor/gmp-6.3.0/mpf/iset_si.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpf/iset_si.c b/vendor/gmp-6.3.0/mpf/iset_si.c new file mode 100644 index 0000000..65abb9a --- /dev/null +++ b/vendor/gmp-6.3.0/mpf/iset_si.c @@ -0,0 +1,57 @@ +/* mpf_init_set_si() -- Initialize a float and assign it from a signed int. + +Copyright 1993-1995, 2000, 2001, 2003, 2004, 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/. */ + +#include "gmp-impl.h" + +void +mpf_init_set_si (mpf_ptr r, long int val) +{ + mp_size_t prec = __gmp_default_fp_limb_precision; + mp_size_t size; + mp_limb_t vl; + + r->_mp_prec = prec; + r->_mp_d = __GMP_ALLOCATE_FUNC_LIMBS (prec + 1); + + vl = (mp_limb_t) ABS_CAST (unsigned long int, val); + + r->_mp_d[0] = vl & GMP_NUMB_MASK; + size = vl != 0; + +#if BITS_PER_ULONG > GMP_NUMB_BITS + vl >>= GMP_NUMB_BITS; + r->_mp_d[1] = vl; + size += (vl != 0); +#endif + + r->_mp_exp = size; + r->_mp_size = val >= 0 ? size : -size; +} |