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author | Jim Meyering <jim@meyering.net> | 1995-07-30 05:30:04 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1995-07-30 05:30:04 +0000 |
commit | 2a818a001e1a967a08c6471406db32b93226f91f (patch) | |
tree | 561c991c430df4d28490e23919abf46c860a19dd /lib/memcpy.c | |
parent | 56c2b0f5f06fc5b167741eb8e702e8a914753af1 (diff) | |
download | gnulib-2a818a001e1a967a08c6471406db32b93226f91f.tar.gz |
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Diffstat (limited to 'lib/memcpy.c')
-rw-r--r-- | lib/memcpy.c | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/lib/memcpy.c b/lib/memcpy.c index a1f8b8f2b5..dba7d56f12 100644 --- a/lib/memcpy.c +++ b/lib/memcpy.c @@ -1,25 +1,16 @@ -/* memcpy.c -- copy memory. - Copy LENGTH bytes from SOURCE to DEST. Does not null-terminate. - The source and destination regions may not overlap. - In the public domain. - By Jim Meyering. */ +/* Copy LEN bytes starting at SRCADDR to DESTADDR. Result undefined + if the source overlaps with the destination. + Return DESTADDR. */ -/* FIXME: remove this before release. */ -#include <assert.h> -#ifndef ABS -# define ABS(x) ((x) < 0 ? (-(x)) : (x)) -#endif - -void -memcpy (dest, source, length) - char *dest; - const char *source; - unsigned length; +char * +memcpy (destaddr, srcaddr, len) + char *destaddr; + const char *srcaddr; + int len; { - assert (length >= 0); - /* Make sure they don't overlap. */ - assert (ABS (dest - source) >= length); + char *dest = destaddr; - for (; length; --length) - *dest++ = *source++; + while (len-- > 0) + *destaddr++ = *srcaddr++; + return dest; } |