(I64 only.) The Get Function Value For Condition Handler routine
    finds the function value (address of the procedure descriptor)
    for the condition handler.

    Format

      LIB$I64_GET_UNWIND_HANDLER_FV   pc_value, handler_fv

1 - Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2 - Arguments

 pc_value

    OpenVMS usage:PC value
    type:         quadword
    access:       read
    mechanism:    by reference

    Address of a location that contains the PC value.

    pc_value is used to find the unwind information block and the
    unwind information block condition handler pointer.

 handler_fv

    OpenVMS usage:address
    type:         quadword
    access:       write
    mechanism:    by reference

    A quadword to receive the function value of the procedure
    descriptor for the condition handler, if there is one.