Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

Accuracy of mathematical functions

The accuracy of a result is influenced by two factors:

Most arguments contain errors. An error in a given argument can accumulate over several steps before the evaluation of a function. Even data fresh from input conversion can contain errors. The effect of argument error on the accuracy of a result depends entirely on the nature of the mathematical function, and not on the algorithm that computes the result. This book does not discuss argument errors of this type.

The mathematical built-in functions that are implemented using inline machine instructions produce results of different accuracy.


Terms of use | Feedback

This information center is powered by Eclipse technology. (http://www.eclipse.org)