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/* mpf_integer_p -- test whether an mpf is an integer */
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/*
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Copyright 2001, 2002, 2014-2015 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include "gmp.h"
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#include "gmp-impl.h"
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int
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mpf_integer_p (mpf_srcptr f) __GMP_NOTHROW
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{
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mp_srcptr fp;
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mp_exp_t exp;
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mp_size_t size;
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size = SIZ (f);
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exp = EXP (f);
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if (exp <= 0)
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return (size == 0); /* zero is an integer,
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others have only fraction limbs */
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size = ABS (size);
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/* Ignore zeroes at the low end of F. */
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for (fp = PTR (f); *fp == 0; ++fp)
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--size;
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/* no fraction limbs */
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return size <= exp;
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}
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