Appendix A. XL Fortran technical information

The compiler phases
External Names in XL Fortran Libraries
The XL Fortran run-time environment
External names in the run-time environment
Technical details of the -qfloat=hsflt option
Implementation details for -qautodbl promotion and padding
Terminology
Examples of storage relationships for -qautodbl suboptions

This section contains details about XL Fortran that advanced programmers may need to diagnose unusual problems, run the compiler in a specialized environment, or do other things that a casual programmer is rarely concerned with.