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MEMCPY(3) Library Functions Manual MEMCPY(3)

memcpycopy byte string

library “libc”

#include <string.h>

void *
memcpy(void * restrict dst, const void * restrict src, size_t len);

void *
mempcpy(void *dst, const void *src, size_t len);

The () and () functions copy len bytes from string src to string dst.

The memcpy() function returns the original value of dst. The mempcpy() function returns a pointer to the byte directly following the last byte written in dst.

bcopy(3), memccpy(3), memmove(3), strcpy(3), wmemcpy(3)

The memcpy() function conforms to ISO/IEC 9899:1990 (“ISO C90”).

In this implementation memcpy() is implemented using bcopy(3), and therefore the strings may overlap. On other systems, copying overlapping strings may produce surprises. Programs intended to be portable should use memmove(3) when src and dst may overlap.

February 22, 2018 DragonFly-5.6.1