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/* mpf_cmp -- Compare two floats.
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Copyright 1993, 1994, 1996, 2001 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 the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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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 Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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mpf_cmp (mpf_srcptr u, mpf_srcptr v)
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mp_size_t usize, vsize;
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/* 1. Are the signs different? */
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if ((usize ^ vsize) >= 0)
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/* U and V are both non-negative or both negative. */
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/* Either U or V is negative, but not both. */
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return usize >= 0 ? 1 : -1;
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/* U and V have the same sign and are both non-zero. */
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usign = usize >= 0 ? 1 : -1;
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/* 2. Are the exponents different? */
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#define STRICT_MPF_NORMALIZATION 0
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#if ! STRICT_MPF_NORMALIZATION
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/* Ignore zeroes at the low end of U and V. */
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cmp = mpn_cmp (up + usize - vsize, vp, vsize);
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else if (vsize > usize)
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cmp = mpn_cmp (up, vp + vsize - usize, usize);
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cmp = mpn_cmp (up, vp, usize);
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return cmp > 0 ? usign : -usign;