Function gst::ffi::g_param_spec_double

pub unsafe extern "C" fn g_param_spec_double(
    name: *const gchar, 
    nick: *const gchar, 
    blurb: *const gchar, 
    minimum: gdouble, 
    maximum: gdouble, 
    default_value: gdouble, 
    flags: GParamFlags
) -> *mut GParamSpec