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/* mpfr_set_si_2exp -- set a MPFR number from a machine signed integer with
a shift
Copyright 2004 Free Software Foundation.
This file is part of the MPFR Library.
The MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The MPFR 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the MPFR 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 "mpfr-impl.h"
int
mpfr_set_si_2exp (mpfr_ptr x, long i, mp_exp_t e, mp_rnd_t rnd_mode)
{
int res;
mpfr_save_emin_emax ();
res = mpfr_set_si (x, i, rnd_mode);
MPFR_ASSERTD ( res == 0);
MPFR_ASSERTD (e == (mp_exp_t)(long) e);
res = mpfr_mul_2si (x, x, e, rnd_mode);
mpfr_restore_emin_emax ();
if (res)
return res;
res = mpfr_check_range(x, 0, rnd_mode);
return res;
}
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