BangleApps/apps/scicalc/README.md

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SciCalc

Simple scientific calculator. I needed one, so I wrote a basic one, no design frills. Input expressions are slightly post processed and then evaluated by the JS interpreter.

Usage

Buttons are arranged on 3 separate screens, swiping up or down switches between them. Swiping right has the same effect as hitting the "=" button. Swiping left has the same effect as hitting the "<" button.

Features

The calculator supports the following operations:

  • basic arithmetic: +, -, *, /, ^ (raise to a power), +/- (invert sign), 1/x (inverse), use of parentheses
  • trigonometric fucntions: sin, cos, tan, asin, acos, atan
  • exponential exp, natural logarithm log, pow function (this one takes 2 comma separated arguments)
  • Pi is provided as a constant
  • a memory button "M" stores or recalls the last result (after hitting the "=" button or swiping down)