- Add FormulaEvaluator class with d4rt integration
- Support single output variable formulas with variable injection
- Include comprehensive error handling and validation
- Add 15 test cases covering evaluation scenarios
- Create working example with Newton's law, quadratic discriminant, etc.
- Export evaluator in main library file
Implements formula evaluation by injecting variable declarations
into d4rt source code, enabling execution of mathematical formulas
with input parameters.
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