Cannot use Math.PI
Hi, when I tried to use Math.PI it complained Math was unavailable. If I put the pure constant value of PI it gets replaced by the parser code with "Math.PI" code which means I have to define a dynamic variable to pass in a common constant. I believe in this case PI should just be output by the parser as its pure value.
I guess need to fix an issue with the parser, will look into it this week.
@optimus-code Added built-in constants which should be used

As per doc: https://manpages.debian.org/buster/opencl-1.2-man-doc/mathConstants.3clc.en.html

I have to add all of them which I will be doing. Please take the latest code to test