arb/arf/is_int_2exp_si.c

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/*=============================================================================
This file is part of ARB.
ARB is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
ARB 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ARB; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2016 Fredrik Johansson
******************************************************************************/
#include "arf.h"
int
arf_is_int_2exp_si(const arf_t x, slong e)
{
if (arf_is_special(x))
return arf_is_zero(x);
else
{
fmpz_t t;
int r;
fmpz_init(t);
arf_bot(t, x);
r = fmpz_cmp_si(t, e) >= 0;
fmpz_clear(t);
return r;
}
}