A surprisingly capable RPN calculator in about 100 lines of Zig code (2021)
A blog post details creating a Zig-based RPN calculator in 100 lines. It efficiently handles math operations like quadratics and sphere volumes, emphasizing RPN's benefits. The calculator supports various functions and operators.
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This blog post discusses the creation of a Reverse Polish Notation (RPN) calculator using Zig programming language in about 100 lines of code. The author demonstrates the calculator's capabilities by solving mathematical equations like quadratic equations and calculating the volume of a sphere. RPN notation is highlighted for its efficiency in reducing the need for parentheses and potentially minimizing errors. The calculator supports various operators and functions, such as basic arithmetic, exponentiation, trigonometric functions, memory references, and more. The program operates through a read-eval-print loop (REPL) where expressions are read from standard input, tokenized, and evaluated accordingly. Users can interact with the calculator by inputting expressions and commands like 'mc' to clear memory slots or 'exit' to quit. The code snippet provided showcases the implementation details of the RPN calculator in Zig, emphasizing its simplicity and extensibility for adding more functions and operators.
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