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BCOPY(3) Library Functions Manual BCOPY(3)

bcopy
copy bytes

#include <strings.h>

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

The bcopy() function copies len bytes from buffer src to buffer dst. The two buffers may overlap. If len is zero, no bytes are copied.

memccpy(3), memcpy(3), memmove(3), strcpy(3), strlcpy(3), strncpy(3)

The bcopy() function first appeared in 4.2BSD.
November 24, 2015 OpenBSD-current