| from libc.stdint cimport int8_t, int16_t, int32_t, int64_t, intptr_t | |
| from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t | |
| cdef extern from *: | |
| ctypedef bint bool | |
| ctypedef struct va_list | |
| cdef extern from *: | |
| ctypedef struct Opaque: | |
| pass | |
| ctypedef union Normal: | |
| int32_t x; | |
| float y; | |
| ctypedef union NormalWithZST: | |
| int32_t x; | |
| float y; | |
| void root(Opaque *a, Normal b, NormalWithZST c); |