52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* mpf_integer_p -- test whether an mpf is an integer */
|
|
|
|
/*
|
|
Copyright 2001, 2002 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 2.1 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; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
|
|
|
|
int
|
|
mpf_integer_p (mpf_srcptr f)
|
|
{
|
|
mp_srcptr ptr;
|
|
mp_exp_t exp;
|
|
mp_size_t size, frac, i;
|
|
|
|
size = SIZ (f);
|
|
if (size == 0)
|
|
return 1; /* zero is an integer */
|
|
|
|
exp = EXP (f);
|
|
if (exp <= 0)
|
|
return 0; /* has only fraction limbs */
|
|
|
|
/* any fraction limbs must be zero */
|
|
frac = ABS (size) - exp;
|
|
ptr = PTR (f);
|
|
for (i = 0; i < frac; i++)
|
|
if (ptr[i] != 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|