Engineering and Scientific Subroutine Library for AIX Version 3 Release 3: Guide and Reference

Related Computation Considerations

This section describes some key points about using the related-computation subroutines.

Accuracy Considerations

• Many of the subroutines performing short-precision computations provide increased accuracy by accumulating results in long precision. This is noted in the functional description for each subroutine.
• There are ESSL-specific rules that apply to the results of computations on the workstation processors using the ANSI/IEEE standards. For details, see What Data Type Standards Are Used by ESSL, and What Exceptions Should You Know About?.