Copy wide characters from one buffer to another
#include <wchar.h>
wchar_t * wmemcpy( wchar_t * ws1,
                   const wchar_t * ws2,
                   size_t n );
libc
The wmemcpy() function copies n bytes from the buffer pointed to by ws2 into the buffer pointed to by ws1.
The wmemcpy() function is locale-independent and treats all wchar_t values identically, even if they're null or invalid characters.
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Copying overlapping buffers isn't guaranteed to work; use wmemmove() to copy buffers that overlap. | 
A pointer to the destination buffer ws1.
| Safety: | |
|---|---|
| Cancellation point | No | 
| Interrupt handler | Yes | 
| Signal handler | Yes | 
| Thread | Yes | 
"Memory manipulation functions" and "Wide-character functions" in the summary of functions chapter.