Gaia/Calculator

This is a placeholder page for the Calculator App.

For now, this etherpad is a first pass at discussing potential requirements: Calculator App Requirements

Calculator App Requirements General

   I can see the equation I've entered

   I can see the results of the current calculation

Basic Operations & Calculator functions

   I can enter in a number with a maximum of N digits

   I can change the sign of a number

   I can enter in a decimal number

   I can add two numbers together

   I can subtract one number from the other

   I can multiply two numbers together

   I can divide a non-zero number from another number 

   I can clear an equation from the screen

   I can clear the last digit of a number I just entered, as long as I haven't pressed an operator key yet

Extended Calculator functions (Might not need or want these features for v1)

   I can perform an operation a second time by pressing the equals sign a second time.

   I can convert the result from a percentage to a decimal value.

   I can store a result in the calculator's memory

   I can retrieve a result from the calculator's memory

   I can clear the value in the calculator's memory

   log/ln/e

   ^

   squareroot and root

   Pi/tau

   cos/sin/tan

Computation Cases

   I'm informed that I can't divide a number by zero  (cannot divide by zero)

   I'm informed that I can't divide zero by zero (result is undefined)

   I can view the result in exponential notation if the number is too large or too small to be displayed