VMS Help PASCAL, Predeclared Routines, Transfer, SNGL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The SNGL function converts the parameter and  returns  its  real
  equivalent.

  Syntax:

     SNGL( x )

  The parameter 'x' must be of an arithmetic type.  The  value  of
  'x'   must   not   be   too   large   to  be  represented  by  a
  single-precision number.