VMS Help PASCAL, /ASSUME=(option[,...]) D=/ASSUME=ACCURACY_SENSITIVE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

                                   OpenVMS Alpha only

 Specifies what the compiler can  assume  about  program  behavior
 indicated by the following options:

    [NO]ACCURACY_SENSITIVE
      Specifies whether certain code transformations that affect
      floating-point operations are allowed.  These changes may or may
      affect the accuracy of the program's results.

      If you specify NOACCURACY_SENSITIVE, the compiler is free to
      reorder floating-point operations based on algebraic identities
      (inverses, associativity, and distribution).  This allows the
      compiler to move additional floating-point operations outside of
      loops or reduce or remove floating-point operations totally,
      thereby improving performance.

      The default, ACCURACY_SENSITIVE, directs the compiler to avoid
      certain floating-point trasformations that might slighly affect
      the program's accuracy.