memcpy(3) Library Functions Manual memcpy(3) memcpy - (libc -lc) #include void *memcpy(size_t n; void dest[restrict n], const void src[restrict n], size_t n); memcpy() n src dest. . memmove(3) . memcpy() dest. attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |memcpy() | | MT-Safe | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. POSIX.1-2001 C89 SVr4 4.3BSD. . ( POSIX C memcpy() .) glibc 2.13 memcpy() ( x86-64) src dest. . . glibc 2.14 ( glibc 2.14) memcpy() ( memcpy() "" memmove(3)). bcopy(3), bstring(3), memccpy(3), memmove(3), mempcpy(3), strcpy(3), strncpy(3), wmemcpy(3) 3 . . : . 6.18 8 2026 memcpy(3)