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MEMCPY(3) FreeBSD 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); void * mempcpy(void *dst, const void *src, size_t len); DESCRIPTION The memcpy() and mempcpy() functions copy len bytes from string src to string dst. If src and dst overlap, the results are not defined. 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), strcpy(3), wmemcpy(3) wmempcpy(3) STANDARDS The memcpy() function conforms to ISO/IEC 9899:1990 ("ISO C90"). BUGS In this implementation memcpy() and mempcpy() are implemented using bcopy(3), and therefore the strings may overlap. On other systems, copy- ing overlapping strings may produce surprises. Programs intended to be portable should use memmove(3) when src and dst may overlap. FreeBSD 13.0 July 14, 2021 FreeBSD 13.0
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | STANDARDS | BUGS
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