Pure Linear moves

Gentlemen,
 Why does task/emccannon.cc care about 'Pure linear move' or 'Pure angular move' or 'Combination angular and linear move'?

Is that because when that code was written the processors and memory were much slower and smaller?

thanks
Stuart
 

Maybe because linear and angular moves have different velocity units.

I could see skipping the angular when there are no rotary axes. In simultaneous 4 and 5 axis work the majority of motion commands have angular components also.
I am just trying to understand the mindset of why the code is structured like it is.

I am just trying to understand the mindset of why the code is structured like it is.

Good luck with that.