pub unsafe extern "C" fn GDALTriangulationComputeBarycentricCoordinates(
    psDT: *const GDALTriangulation,
    nFacetIdx: c_int,
    dfX: f64,
    dfY: f64,
    pdfL1: *mut f64,
    pdfL2: *mut f64,
    pdfL3: *mut f64
) -> c_int