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.