sqrt implementation.
[kopensolaris-gnu/glibc.git] / sysdeps / cris / memcopy.h
1 /* Copyright (C) 2001 Free Software Foundation, Inc.
2    This file is part of the GNU C Library.
3
4    The GNU C Library is free software; you can redistribute it and/or
5    modify it under the terms of the GNU Lesser General Public
6    License as published by the Free Software Foundation; either
7    version 2.1 of the License, or (at your option) any later version.
8
9    The GNU C Library is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12    Lesser General Public License for more details.
13
14    You should have received a copy of the GNU Lesser General Public
15    License along with the GNU C Library; if not, write to the Free
16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17    02111-1307 USA.  */
18
19 #include <sysdeps/generic/memcopy.h>
20
21 /* We override the word-copying macros, partly because misalignment in one
22    pointer isn't cause for a special function, partly because we want to
23    get rid of wordcopy.c; these macros are only used in memmove.c (and
24    it's sibling bcopy) since we have arch-specific mempcpy, memcpy and
25    memset.  */
26
27 #undef OP_T_THRES
28 #define OP_T_THRES OPSIZ
29
30 #define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes)              \
31   do                                                                    \
32     {                                                                   \
33       unsigned long enddst_bp = dst_bp + nbytes - (nbytes % OPSIZ);     \
34       nbytes_left = (nbytes % OPSIZ);                                   \
35       while (dst_bp < (unsigned long) enddst_bp)                        \
36         {                                                               \
37           op_t x = *(op_t *) src_bp;                                    \
38           src_bp += sizeof x;                                           \
39           *(op_t *) dst_bp = x;                                         \
40           dst_bp += sizeof x;                                           \
41         }                                                               \
42     } while (0)
43
44 #define WORD_COPY_BWD(dst_bp, src_bp, nbytes_left, nbytes)              \
45   do                                                                    \
46     {                                                                   \
47       unsigned long enddst_bp = dst_bp - nbytes + (nbytes % OPSIZ);     \
48       nbytes_left = (nbytes % OPSIZ);                                   \
49       while (dst_bp > enddst_bp)                                        \
50         {                                                               \
51           op_t x;                                                       \
52           src_bp -= sizeof x;                                           \
53           x = *(op_t *) src_bp;                                         \
54           dst_bp -= sizeof x;                                           \
55           *(op_t *) dst_bp = x;                                         \
56         }                                                               \
57     } while (0)