INTRINSICCALL

Message        <Context> an apparent invocation of intrinsic
               function "<name>", <problem>.  It will be treated as
               an ordinary external call.

Description    A function that could be handled internally by the
               compiler has been called in a manner that is
               inconsistent with expected usage.  In such a case,
               the compiler will generate a run-time call to the
               function.  This could result in performance loss.

User Action    If the function is intended to refer to the runtime
               library routine, the appropriate header file should
               be included in the source to provide the full
               function prototype and allow certain types of
               argument conversions.  Alternatively, call arguments
               could be type cast as specified in the error message,
               or the function prototype could be added by hand.  If
               the function is not intended to refer to the runtime
               library routine, the intrinsic version can be
               disabled by means of the "#pragma function
               (function_name)" directive.