xfnty/calc

Simple mathematical expression solver that supports operator priorities.

Simple Calculator in C++

Much simpler python version (140 loc)

Features

• REPL
• Floating-point numbers
• Mathematical constants: Pi, e
• Operators: +, -, *, /, ^, %, !
• Grouping expressions: (...), |...|

Building and Running

• Configure, build and run (after cloning the repo): make
• Configure CMake: make c
• Build the project: make b, make build
• Build and run: make args="'-2 * 2 + 1.5!'"
• Run: make r ...
• Run using gdb: make d args="'1+5!'"

make configure build_type=Release will disable debug messages.

Credits & References

• Crafting Interpreters by Bob Nystrom
• Catch2
• expected
• fmt
• spdlog
• cpp-linenoise

TODO

• Parser error messages
• Make macros in Util.h an inline functions
• Better stack-related error handling
• Remove else blocks at the end of functions in ExpressionEvaluator
• Fix ^ operator and increase its precedence
• Better std::string usage
• Builtin functions: sin(), ctan(), ln(), floor(), ceil() ...
• Fix Windows build