5.10 memmove—move possibly overlapping memory

Synopsis

#include <string.h>
void *memmove(void *dst, const void *src, size_t length);

Description
This function moves length characters from the block of memory starting at *src to the memory starting at *dst. memmove reproduces the characters correctly at *dst even if the two areas overlap.

Returns
The function returns dst as passed.

Portability
memmove is ANSI C.

memmove requires no supporting OS subroutines.