1 /* __mpn_cmp -- Compare two low-level natural-number integers.
3 Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Library General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
15 License for more details.
17 You should have received a copy of the GNU Library General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* Compare OP1_PTR/OP1_SIZE with OP2_PTR/OP2_SIZE.
25 There are no restrictions on the relative sizes of
27 Return 1 if OP1 > OP2, 0 if they are equal, and -1 if OP1 < OP2. */
31 __mpn_cmp (mp_srcptr op1_ptr
, mp_srcptr op2_ptr
, mp_size_t size
)
33 __mpn_cmp (op1_ptr
, op2_ptr
, size
)
40 mp_limb op1_word
, op2_word
;
42 for (i
= size
- 1; i
>= 0; i
--)
44 op1_word
= op1_ptr
[i
];
45 op2_word
= op2_ptr
[i
];
46 if (op1_word
!= op2_word
)
51 /* This can *not* be simplified to
53 since that expression might give signed overflow. */
54 return (op1_word
> op2_word
) ? 1 : -1;