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4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/* mpf_init_set_si() -- Initialize a float and assign it from a signed int.
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Copyright 1993-1995, 2000, 2001, 2003, 2004, 2012 Free Software Foundation,
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Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include "gmp-impl.h"
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void
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mpf_init_set_si (mpf_ptr r, long int val)
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{
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mp_size_t prec = __gmp_default_fp_limb_precision;
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mp_size_t size;
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mp_limb_t vl;
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r->_mp_prec = prec;
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r->_mp_d = __GMP_ALLOCATE_FUNC_LIMBS (prec + 1);
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vl = (mp_limb_t) ABS_CAST (unsigned long int, val);
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r->_mp_d[0] = vl & GMP_NUMB_MASK;
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size = vl != 0;
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#if BITS_PER_ULONG > GMP_NUMB_BITS
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vl >>= GMP_NUMB_BITS;
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r->_mp_d[1] = vl;
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size += (vl != 0);
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#endif
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r->_mp_exp = size;
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r->_mp_size = val >= 0 ? size : -size;
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}
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