Articles or book(s) about the functions behind a scientific calculator

[WillMarchant]

(11-25-2018 06:11 AM)Dan Wrote:  .... Also looking to write an editor for entering equations for the solver and for graph sketching, e.g. typing x^2 + 1 results in ENTER 2 ^ 1 + . I recall seeing flowcharts from expired HP patents, but not sure if it was for an editor or something else.

https://en.m.wikipedia.org/wiki/Shunting-yard_algorithm