/// SimpleHighPrecisionClock provides a high-precision clock based on the CPU's
/// Time Stamp Counter (TSC). It allows you to track time in any timezone, which
/// is specified upon creation.
///
/// This clock uses the TSC to calculate precise time intervals by comparing
/// current TSC readings to an initial baseline TSC reading. The CPU frequency
/// is used to convert the TSC difference into nanoseconds, which is added to
/// a baseline date-time set at instantiation.
///
/// This clock assumes that the TSC is constant and non-stop on the system.
/// It warns if the TSC appears to be non-invariant, as this may reduce accuracy.
///
///
/// # Example
/// rust /// use chrono::Utc; /// use high_precision_clock::SimpleHighPrecisionClock; /// let clock = SimpleHighPrecisionClock::new(&Utc); /// let current_time = clock.now(); /// println!("Current high-precision time: {}", current_time); ///