+/** These variables equal the number of ticks in the unit of time they're
+ * named after in a double.
+ * @{
+ */
+extern double s; ///< second
+extern double ms; ///< millisecond
+extern double us; ///< microsecond
+extern double ns; ///< nanosecond
+extern double ps; ///< picosecond
+/** @} */
+
+/** These variables the inverse of above. They're all < 1.
+ * @{
+ */
+extern double Hz; ///< Hz
+extern double kHz; ///< kHz
+extern double MHz; ///< MHz
+extern double GHz; ///< GHz
+/** @}*/
+} // namespace Float
+
+/** These variables equal the number of ticks in the unit of time they're
+ * named after in a 64 bit integer.
+ *
+ * @{
+ */