* FastMath speed is achieved by relying heavily on optimizing compilers - * to native code present in many JVM todays and use of large tables. - * Precomputed literal arrays are provided in this class to speed up load - * time. If users prefer to compute the tables automatically at load time, - * they can change the compile-time constant {@code USE_PRECOMPUTED_TABLES} - * and set it to {@code false}. This will increase class load time at first - * use, but this overhead will occur only once per run, regardless of the - * number of subsequent calls to computation methods. Note that FastMath is + * to native code present in many JVMs today and use of large tables. + * The larger tables are lazily initialised on first use, so that the setup + * time does not penalise methods that don't need them. + *
+ *+ * Note that FastMath is * extensively used inside Apache Commons Math, so by calling some algorithms, - * the one-shot overhead when the constant is set to false will occur + * the overhead when the the tables need to be intialised will occur * regardless of the end-user calling FastMath methods directly or not. * Performance figures for a specific JVM and hardware can be evaluated by * running the FastMathTestPerformance tests in the test directory of the source