memcpy(3) - NetBSD Manual Pages

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MEMCPY(3)               NetBSD Library Functions Manual              MEMCPY(3)


NAME

     memcpy -- copy byte string


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <string.h>

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

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


DESCRIPTION

     The memcpy() and mempcpy() functions copy len bytes from string src to
     string dst.  The arguments must not overlap -- behavior if the arguments
     overlap is undefined.  To copy byte strings that overlap, use memmove(3).


RETURN VALUES

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

     The mempcpy() function returns a pointer to the byte after the last writ-
     ten byte.


SEE ALSO

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


STANDARDS

     The memcpy() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

NetBSD 10.99                    August 1, 2023                    NetBSD 10.99