Return to iset_si.c CVS log

Up to [local] / OpenXM_contrib / gmp / mpf

Import gmp 2.0.2

/* mpf_init_set_si() -- Initialize a float and assign it from a signed int.

Copyright (C) 1993, 1994, 1995 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_init_set_si (mpf_ptr r, long int val)
#else
mpf_init_set_si (r, val)
     mpf_ptr r;
     long int val;
#endif
{
  mp_size_t prec = __gmp_default_fp_limb_precision;
  r->_mp_d = (mp_ptr) (*_mp_allocate_func) ((prec + 1) * BYTES_PER_MP_LIMB);
  r->_mp_prec = prec;

  if (val > 0)
    {
      r->_mp_d[0] = val;
      r->_mp_size = 1;
      r->_mp_exp = 1;
    }
  else if (val < 0)
    {
      r->_mp_d[0] = -val;
      r->_mp_size = -1;
      r->_mp_exp = 1;
    }
  else
    {
      r->_mp_size = 0;
      r->_mp_exp = 0;
    }
}