Function clipper_clipperd_execute 

pub unsafe extern "C" fn clipper_clipperd_execute(
    cD: *mut ClipperClipperD,
    ct: ClipperClipType,
    fr: ClipperFillRule,
    closed: *mut ClipperPathsD,
    open: *mut ClipperPathsD,
) -> c_int

Decimal-coordinate version of clipper_clipper64_execute.