VMS Help FORTRAN, Error Messages, Compilation Errors, INVFUNUSE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SEVERITY:  F

  MESSAGE TEXT:  Invalid use of function name in CALL statement

  EXPLANATION:  A CALL statement referred to a subprogram name that
  was used as a CHARACTER, REAL*16, or COMPLEX*16 function.  Example:

     IMPLICIT CHARACTER*10(C)
     CSCAL = CFUNC(X)
     CALL CFUNC(X)