How to divide X by Y in HAL?

I have two gmoccapy pins.

gmoccapy.program.length is an out pin (S32) showing the total number of lines of the program

gmoccapy.program.current-line is an out pin (S32) indicating the current working line of the program

I learned to count duration of a program execution using this useful article.

So we can calculate "speed" of program execution measured in lines per minute.
Why do I need this?
Well, then I can estimate program execution remaining time, e.g. "how long do I need to wait till this machine will stop producing noise :silly: "

I didn't find any hal component which can divide. Any suggestions? Thanks.

By reading the manual I see that we can implement our own components. So I'll try to implement my arithmetic operation

tarasko wrote: I didn't find any hal component which can divide. Any suggestions? Thanks.

You can use linuxcnc.org/docs/2.7/html/man/man9/invert.9.html and linuxcnc.org/docs/2.7/html/man/man9/mult2.9.html

It would be nice to have a generic arithmetic component
But such a component would need quite a complex parser to be useful, there's no "eval" function in C.

It would be nice to have a generic arithmetic component

Code:

loadrt generic_arithmetic cfg="(x/y)*z+q"

But such a component would need quite a complex parser to be useful, there's no "eval" function in C.

Well, as an example we can take an implementation of a Reverse polish notation parser from this cute book on page 74. This notation is a bit unusual, but the program implementation is very simple.

So the final configuration string will look like next: