[Info-vax] cast REAL*16 to constant 18446744073709551616

[HCorte]

Hi trying to cast REAL*16 to the constant 18446744073709551616 that is 9 bytes length how to do it?


tried (http://www.cs.uwm.edu/classes/cs151/Bacon/Lecture/HTML/ch06s09.html):
        REAL*16     OVER8BYTES
        PARAMETER  (OVER8BYTES = 18446744073709551616e) 

%F90-E-ERROR, The decimal constant was too large when converting to an integer, and overflow occurred.   [184
46744073709551616]