Might want to read Notation as a Tool of Thought: https://www.eecg.utoronto.ca/~jzhu/csc326/readings/iverson.p...

If you want you can switch out his terse names in the .h and .c and see if that helps. I'm not so sure it does, but experience with array languages and a couple of decades with rather advanced C will. As in, experience is what matters rather than "IQ".