Function ImPlot_PlotHistogram_S8Ptr 

pub unsafe extern "C" fn ImPlot_PlotHistogram_S8Ptr(
    label_id: *const c_char,
    values: *const ImS8,
    count: c_int,
    bins: c_int,
    bar_scale: f64,
    range: ImPlotRange_c,
    flags: ImPlotHistogramFlags,
) -> f64