MEMMOVE(3) Library Functions Manual MEMMOVE(3)

memmove — copy bytes in memory with overlapping areas

#include <string.h>

void *memmove(void *s1, const void *s2, size_t n);

The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 (“POSIX.1”) defers to the ISO C standard.

The memmove () function shall copy n bytes from the object pointed to by s2 into the object pointed to by s1. Copying takes place as if the n bytes from the object pointed to by s2 are first copied into a temporary array of n bytes that does not overlap the objects pointed to by s1 and s2, and then the n bytes from the temporary array are copied into the object pointed to by s1.

The memmove () function shall return s1; no return value is reserved to indicate an error.

No errors are defined.

None.

None.

None.

None.

The Base Definitions volume of IEEE Std 1003.1-2001 (“POSIX.1”), <string.h>

First released in Issue 4. Derived from the ANSI C standard.

footer end

January 1, 2004 posix.fail