<P> TestU01 is a software library, implemented in the ANSI C language, that offers a collection of utilities for the empirical randomness testing of random number generators (RNGs). The library was first introduced in 2007 by Pierre L'Ecuyer and Richard Simard of the Université de Montréal . </P> <P> The library implements several types of random number generators, including some proposed in the literature and some found in widely used software . It provides general implementations of the classical statistical tests for random number generators, as well as several others proposed in the literature, and some original ones . These tests can be applied to the generators predefined in the library, user - defined generators, and streams of random numbers stored in files . Specific tests suites for either sequences of uniform random numbers in (0, 1) or bit sequences are also available . Basic tools for plotting vectors of points produced by generators are provided as well . </P> <P> An initial battery of randomness tests for RNGs was suggested in the 1969 first edition of The Art of Computer Programming by Donald Knuth . Knuth's tests were then supplanted by George Marsaglia's Diehard tests (1996) consisting of fifteen different tests . The inability to modify the test parameters or add new tests led to the development of the TestU01 library . </P>

Testu01 a c library for empirical testing of random number generators