diff options
author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-09-05 01:11:54 +0000 |
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committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-09-05 01:11:54 +0000 |
commit | ffcbbbab99149ea7d8e800326458b70b54438076 (patch) | |
tree | e2a997b294961a00f5d259edefbef93b8501c089 /libchill/memmove.c | |
parent | ff8e09bdcb33f98c7094eec337fb5e93da360a0d (diff) |
* Chill runtime moved into toplevel libchill.
* Makefile.in Revamped due to move. Add multilib support.
* configure.in: Similarly. Use autoconf.
* powerset.h: Do not depend on BITS_PER_UNIT.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22238 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libchill/memmove.c')
-rw-r--r-- | libchill/memmove.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/libchill/memmove.c b/libchill/memmove.c new file mode 100644 index 00000000000..7622428423b --- /dev/null +++ b/libchill/memmove.c @@ -0,0 +1,63 @@ +/* Implement string-related runtime actions for CHILL. + Copyright (C) 1992,1993 Free Software Foundation, Inc. + Author: Bill Cox + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define MIN(a, b) ((a) < (b) ? (a) : (b)) + + +/* + * function memmove + * + * parameters: + * S1 - pointer to destination string + * S2 - pointer to source string + * LEN - length of string + * + * returns: + * pointer to destination string + * + * exceptions: + * none + * + * abstract: + * copies a string safely, where the source and dest areas may overlap. + * + */ + +void * +memmove (s1, s2, n) + void *s1; + const void *s2; + int n; +{ + char *sc1 = s1; + const char *sc2 = s2; + + if (sc2 < sc1 && (sc1 < sc2 + n)) + for (sc1 += n, sc2 += n; 0 < n; --n) + *--sc1 = *--sc2; + else +#if 0 + for (; 0 < n; --n) + *sc1++ = *sc2++; +#else + memcpy (sc1, sc2, n); +#endif + return s1; +} |