Function ImPlot_PlotHistogram2D_doublePtr 

pub unsafe extern "C" fn ImPlot_PlotHistogram2D_doublePtr(
    label_id: *const c_char,
    xs: *const f64,
    ys: *const f64,
    count: c_int,
    x_bins: c_int,
    y_bins: c_int,
    range: ImPlotRect,
    flags: ImPlotHistogramFlags,
) -> f64