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FreeBSD 11.0 - man page for memcpy (freebsd section 3)

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MEMCPY(3)			   BSD Library Functions Manual 			MEMCPY(3)

NAME
     memcpy -- copy byte string

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <string.h>

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

DESCRIPTION
     The memcpy() function copies len bytes from string src to string dst.

RETURN VALUES
     The memcpy() function returns the original value of dst.

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

STANDARDS
     The memcpy() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BUGS
     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.

BSD					   June 4, 1993 				      BSD
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