53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/* mpn_cmp -- Compare two low-level natural-number integers.
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Copyright (C) 1991, 1992 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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#include "gmp.h"
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#include "gmp-impl.h"
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/* Compare OP1_PTR/OP1_SIZE with OP2_PTR/OP2_SIZE.
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There are no restrictions on the relative sizes of
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the two arguments.
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Return 1 if OP1 > OP2, 0 if they are equal, and -1 if OP1 < OP2. */
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int
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#ifdef __STDC__
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mpn_cmp (mp_srcptr op1_ptr, mp_srcptr op2_ptr, mp_size size)
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#else
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mpn_cmp (op1_ptr, op2_ptr, size)
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mp_srcptr op1_ptr;
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mp_srcptr op2_ptr;
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mp_size size;
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#endif
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{
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mp_size i;
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mp_limb op1_word, op2_word;
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for (i = size - 1; i >= 0; i--)
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{
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op1_word = op1_ptr[i];
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op2_word = op2_ptr[i];
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if (op1_word != op2_word)
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goto diff;
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}
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return 0;
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diff:
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return (op1_word > op2_word) ? 1 : -1;
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}
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