The RPN calculator engine code will be presented next. It is not expected that you will understand all of the GMP function calls because they have not been presented. However, if you have Red Hat Enterprise Linux installed, you can find out more about the GMP calls by performing the following command:
$ info GMP
This will bring up the info viewer with documentation about the GMP function library. Listing 10.5 lists the RPN calculator code. Note especially the standard I/O calls in the functions rpn_dump() and rpn_process().
How the server works from the client side, will be examined after the remainder of the server code is presented. Listing 10.6 shows the remainder of the server source code. This represents the main program segment of the server.
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