How do I create a pseudocode for this expression?

The problem is in the PDF below.

All I have is identifying the script values :

m=(y-b)/x;b=y-x*m;c=(x-r)+(y-d);d=(y-r)+(x-c):

Im confused and stuck.

[darova]

Can you be more specific? What have you tried? What problems are you facing?

[Walter Roberson]

Also this does not appear to be a MATLAB question.