A JIT-compiled RPN calculator. This is just as stupid as last time.
expr2 [EXPRESSION]
An expression can be provided as the first command line argument, otherwise expressions will be read line-by-line from stdin.
Supported operators are +, -, * and /.
Numbers can be in decimal (no prefix), binary (prefix with 0b), octal (prefix with 0o) or hexadecimal (prefix with 0x).