Re: why use memcpy when memmove is there?

[Jan Engelhardt <jengelh@computergmbh.de>]

On Aug 13 2007 11:55, sk malik wrote:
>Subject: why use memcpy when memmove is there?

>memcpy copies a part of memory to some other location
>but It will not work for all cases of overlapping
>blocks.(if the start of destination block falls
>between the source block)
>
>while memove copes with overlapping areas.
>
>then why is memcpy present in the sources can't we
>simply do
>
>"#define memcpy memmove" in include/linux/string.h
>
>or am I missing something?

memmove must copy with overlapping memory segments, while memcpy does not, and
can therefore use a different optimization strategy. But that would have been
apparent if you had looked at the code.


	Jan
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