pub unsafe extern "C" fn manifold_meshgl64_copy(
mem: *mut c_void,
m: *mut ManifoldMeshGL64,
) -> *mut ManifoldMeshGL64
pub unsafe extern "C" fn manifold_meshgl64_copy(
mem: *mut c_void,
m: *mut ManifoldMeshGL64,
) -> *mut ManifoldMeshGL64