Function libpng_sys::ffi::png_get_cHRM_XYZ

pub unsafe extern "C" fn png_get_cHRM_XYZ(
    png_ptr: &png_struct, 
    info_ptr: &png_info, 
    red_X: &mut f64, 
    red_Y: &mut f64, 
    red_Z: &mut f64, 
    green_X: &mut f64, 
    green_Y: &mut f64, 
    green_Z: &mut f64, 
    blue_X: &mut f64, 
    blue_Y: &mut f64, 
    blue_Z: &mut f64
) -> u32