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54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* mpz_cmp(u,v) -- Compare U, V. Return positive, zero, or negative
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based on if U > V, U == V, or U < V.
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Copyright 1991, 1993, 1994, 1996, 2001, 2002, 2011, 2020 Free Software
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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-impl.h"
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int
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mpz_cmp (mpz_srcptr u, mpz_srcptr v) __GMP_NOTHROW
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{
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mp_size_t usize, vsize, asize;
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mp_srcptr up, vp;
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int cmp;
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usize = SIZ(u);
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vsize = SIZ(v);
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/* Cannot use usize - vsize, may overflow an "int" */
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if (usize != vsize)
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return (usize > vsize) ? 1 : -1;
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asize = ABS (usize);
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up = PTR(u);
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vp = PTR(v);
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MPN_CMP (cmp, up, vp, asize);
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return (usize >= 0 ? cmp : -cmp);
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}
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