freebsd-dev/contrib/libgmp/mpf/set_d.c

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/* mpf_set_d -- Assign a float from a IEEE double.
Copyright (C) 1993, 1994, 1995, 1996 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 the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "gmp.h"
#include "gmp-impl.h"
void
#if __STDC__
mpf_set_d (mpf_ptr r, double d)
#else
mpf_set_d (r, d)
mpf_ptr r;
double d;
#endif
{
int negative;
if (d == 0)
{
SIZ(r) = 0;
EXP(r) = 0;
return;
}
negative = d < 0;
d = ABS (d);
EXP(r) = __gmp_extract_double (PTR(r), d);
SIZ(r) = negative ? -LIMBS_PER_DOUBLE : LIMBS_PER_DOUBLE;
}