HP Fortran Programmer's Reference (September 2007)

Intrinsic procedures
Intrinsic procedure specifications
Chapter 11576
Result
IZEXT converts A to INTEGER(2) by sign-extending zeroes instead of the actual sign bit.
JNUM(I)
Description
Convert character to integer type.
Class
Elemental nonstandard function.
Argument
I must be of type character.
Result
Integer type.
JZEXT(A)
Description
Zero extend.
Class
Generic elemental nonstandard function.
Argument
A must be of type INTEGER(1), INTEGER(2), INTEGER(4), LOGICAL(1),
LOGICAL(2), or LOGICAL(4).
Result type/
type parameters
The result is of type INTEGER(4).