85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
/* mpz_cmp(u,v) -- Compare U, V. Return postive, zero, or negative
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based on if U > V, U == V, or U < V.
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Copyright (C) 1991 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 General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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The GNU MP Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU MP Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef BERKELEY_MP
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#include "mp.h"
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#endif
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#include "gmp.h"
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#include "gmp-impl.h"
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#ifndef BERKELEY_MP
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int
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#ifdef __STDC__
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mpz_cmp (const MP_INT *u, const MP_INT *v)
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#else
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mpz_cmp (u, v)
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const MP_INT *u;
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const MP_INT *v;
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#endif
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#else /* BERKELEY_MP */
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int
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#ifdef __STDC__
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mcmp (const MP_INT *u, const MP_INT *v)
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#else
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mcmp (u, v)
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const MP_INT *u;
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const MP_INT *v;
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#endif
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#endif /* BERKELEY_MP */
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{
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mp_size usize = u->size;
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mp_size vsize = v->size;
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mp_size size;
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mp_size i;
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mp_limb a, b;
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mp_srcptr up, vp;
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if (usize != vsize)
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return usize - vsize;
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if (usize == 0)
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return 0;
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size = ABS (usize);
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up = u->d;
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vp = v->d;
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i = size - 1;
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do
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{
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a = up[i];
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b = vp[i];
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i--;
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if (i < 0)
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break;
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}
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while (a == b);
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if (a == b)
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return 0;
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if ((a < b) == (usize < 0))
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return 1;
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else
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return -1;
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}
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