Long floating-point number

REAL*8 X, Y, F2PPLFP
X = 12.5D0
Y = F2PPLFP(X)
PRINT *,
1  'VALUE RETURNED TO FORTRAN:', Y
END

F2PPLFP: PROC (X) OPTIONS(FORTRAN)
      RETURNS(FLOAT DEC(16));
  DCL X       FLOAT DEC(16);
  PUT SKIP
      LIST('PL/I ARG VALUE:', X);
  RETURN (X);
END F2PPLFP;