The floatingpoint.h header file replaces f77_floatingpoint.h, and should be used in source programs as follows:
#include "floatingpoint.h"
Header file references of the form f77/filename should be changed to remove the f77/ directory path.
Some programs utilizing non-standard aliasing techniques (by overindexing arrays, or by overlapping Cray or Fortran pointers) may benefit by compiling with the appropriate -xalias flag. See –xalias[=keywords].