Standard Library function that allows PV‑WAVE to return a value or values that it has calculated to an external routine written in C.

reply—A variable of any data type, except of type structure, representing the result of an operation that PV‑WAVE, as a server, has performed.

result—A number indicating the status of the reply operation. A return value of –1 indicates an error. Errors can also be trapped by the ON_IOERROR routine.

Return_Params—If present and nonzero, causes UNIX_REPLY to return the modified parameters to the client. The number of parameters to be sent back is the same as the number that came in with UNIX_LISTEN. This number is tracked internally by PV‑WAVE.

CALL_UNIX, LINKNLOAD, ON_IOERROR, SORTN, SPAWN (UNIX), UNIX_LISTEN

For more informatione, see the PV‑WAVE Application Developer’s Guide.