RPN Calculator

Evaluates a Reverse Polish Notation (postfix) expression: whitespace-separated tokens, each a number or an operator/function that pops its operands off a stack and pushes the result. Supports arithmetic, exponentiation/modulo, roots, trigonometry, logarithms, rounding, bitwise ops, and constants (pi, e, phi). Always returns the decimal result — for hex/bin/oct rendering, convert the returned number yourself.

{'type': 'object', 'required': ['expr'], 'properties': {'expr': {'type': 'string', 'description': 'space-separated RPN expression, e.g. "3 4 + 2 *"'}}, 'additionalProperties': False}

{'type': 'number'}