# Undocumented

## Functions defined in the headers, but not in the wiki

- [SDL_HasExactlyOneBitSet32](SDL_HasExactlyOneBitSet32)
- [SDL_memcpy4](SDL_memcpy4)
- [SDL_memset4](SDL_memset4)
- [_SDL_size_add_overflow_builtin](_SDL_size_add_overflow_builtin)
- [_SDL_size_mul_overflow_builtin](_SDL_size_mul_overflow_builtin)