Library /sys$common/syshlp/BASICHELP.HLB — Compile time errors, INVREATYP
ERROR - A reference to the REAL function contains an invalid data type
keyword, for example, A = REAL(A, LONG). Change the invalid data type
keyword. The REAL function returns only SINGLE, DOUBLE, GFLOAT,
SFLOAT, TFLOAT, or XFLOAT values.