Calculator

A basic x86-64 CLI-based assembly calculator for Linux.

Tested on Ubuntu 18.04 LTS; probably works for most versions of Linux. Created as the course project for SRJC's CS 12 (Assembly) class in the Spring 2021 term.

To compile, simply make calculator and then run from terminal with ./calculator. The Makefile is set up for yasm and ld.

Features

• Six operations supported:
  • Addition (+)
  • Subtraction (-)
  • Multiplication (*)
  • Division (/)
  • Modulus (%)
  • Power (^)
• Answer rollover (i.e. operations based on previous answer)
• Negative/positive support
• Input validation

Limitations

• Max input size is 128 characters
• Program uses 64 bit signed integers; as a result:
  • Numbers must be within the range -2^63 to 2^63 -1
    • -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
  • No decimals will be provided in results
  • Integers will overflow without warning
  • Numbers may be truncated
• Negative exponents are not supported (simply because decimals/fractions are not supported)
• Complex equations (i.e. more than two numbers) are not supported