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0
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Accept this record. This instructs MFX to accept the record
now leaving Phase 3. Place the (work area) address of this record in
Register 1. Exits using the 32-bit parameter list return a
31-bit address; exits using the 64-bit parameter list return a
64-bit address. This return code is used when selectively editing
records for output; it passes the (possibly altered) record back to
the sort. The RECORD statement is required if this exit routine
changes the maximum record length.
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4
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Delete this record. MFX will delete the record leaving Phase
3. There is no need to load the address of this record into Register
1. When MFX returns control to the E35, the first word of the
parameter list (the address of the record leaving Phase 3) will
refer to a new record, but the second word (the address of the
output area record) will be unchanged.
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8
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Disconnect E35. This instructs MFX to process any remaining
records without showing them to the E35 exit. Register 1 is ignored
for processing this return code. When this return code is used at
end-of file (signalled by a zero address in the first word of the
parameter list), it indicates that E35 is also finished and will not
add additional records. When used before end-of-file, it indicates
that MFX should process the "current" record passed to the E35, and
any subsequent records, as if there were no E35 present. Note that
when MFX is not creating any output files (SORTOUT or SORTOFxx) and
E35 is the only "output", MFX terminates immediately, since any
subsequent records will never be seen. Note that if an XSUM or XDUP
data set was being created, it will only contain records generated
prior to the return code of 8.
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12
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Insert a record. This tells MFX to add a record just before
the record is about to leave Phase 3. Load the address of the
inserted record into Register 1. Exits using the 32-bit parameter
list return a 31-bit address; exits using the 64-bit parameter list
return a 64-bit address. When MFX returns control to the E35 exit
routine, the first word of the parameter list (the address of the
record leaving Phase 3) will be unchanged, but the second word (the
address of the output area record) will refer to the inserted
record. The exit routine can then add another record or process the
current one.
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16
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Terminate MFX. This tells MFX to end its program and return to
the calling program or the supervisor. MFX uses a completion code of
16 to indicate that the sort was unsuccessful.
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