Function gvr_controller_battery_level_to_string

pub unsafe extern "C" fn gvr_controller_battery_level_to_string(
    level: i32,
) -> *const c_char

Convenience to convert a battery level to string. The returned pointer is static and valid throughout the lifetime of the application.

@param level The gvr_controller_battery_level to convert to string. @return A pointer to a string that describes the value.