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/* double mpz_get_d_2exp (signed long int *exp, mpz_t src).
Copyright 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 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.
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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
#include "longlong.h"
double
mpz_get_d_2exp (signed long int *exp2, mpz_srcptr src)
{
mp_size_t size, abs_size;
mp_srcptr ptr;
long exp;
size = SIZ(src);
if (UNLIKELY (size == 0))
{
*exp2 = 0;
return 0.0;
}
ptr = PTR(src);
abs_size = ABS(size);
MPN_SIZEINBASE_2EXP(exp, ptr, abs_size, 1);
*exp2 = exp;
return mpn_get_d (ptr, abs_size, size, -exp);
}
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