ref: c946d13235a8460a8c7f2aa86e705202d77231a7
dir: /src/libc/string/memcpy.c/
#include <string.h> #undef memcpy void * memcpy(void *restrict s1, const void *restrict s2, size_t n) { char *d = s1; const char *s = s2; while (n-- > 0) *d++ = *s++; return s1; }