FORTRAN 77 Language Reference

Procedure References by Entry Names

An ENTRY name used in a subroutine subprogram is treated like a subroutine and can be referenced with a CALL statement. Similarly, the ENTRY name used in a function subprogram is treated like a function and can be referenced as a function reference.

An entry name can be specified in an EXTERNAL statement and used as an actual argument. It cannot be used as a dummy argument.

Execution of an ENTRY subprogram (subroutine or function) begins with the first executable statement after the ENTRY statement.

The ENTRY statement is a nonexecutable statement.

The entry name cannot be used in the executable statements that physically precede the appearance of the entry name in an ENTRY statement.