  The Lyapunov exponent is used to characterize the stability of the dynamic
response of the system, and it is often employed to verify if a system is
chaotic. Since its discovery in the nineteenth century, various methods have
been proposed and developed for its calculation. The present work proposes a
method for the calculation of the largest Lyapunov exponent, based on
conditional number of the function, which describes the loss of bits in the
simulation based on relative rounding error. Four discrete maps are used to
show the effectiveness of the proposed method.
