VMS Help PASCAL, Data Types, Real, T_FLOAT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The T_FLOAT type denotes  an  IEEE  T_Floating  double-precision
  real  value  regardless of the setting of the FLOAT attribute or
  /FLOAT command line qualifier.

  T_FLOAT is supported only on OpenVMS Alpha Systems.