VMS Help CC, Run-time functions, erand48  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Generate uniformly distributed pseudorandom number sequences.
  Returns 48-bit nonnegative, double-precision, floating-point
  values.

  Syntax:

        #include <stdlib.h>

        double erand48 (unsigned short int xsubi[3]);