VMS Help CC, Messages, FLOATERR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> a floating point error occurs in evaluating
                the expression "<expression>".

 Description    A floating-point error occurred while evaluating a
                constant expression.  This is often caused by an
                invalid floating-point number.  The value of the
                expression is undefined.

 User Action    Correct the floating-point constant expression.