pub unsafe extern "C" fn GxB_Matrix_unpack_BitmapC(
A: GrB_Matrix,
Ab: *mut *mut i8,
Ax: *mut *mut c_void,
Ab_size: *mut GrB_Index,
Ax_size: *mut GrB_Index,
iso: *mut bool,
nvals: *mut GrB_Index,
desc: GrB_Descriptor,
) -> GrB_Info