Welcome to sup-mathexpr’s documentation!

Overview

This library provides an interface to expose the functionality of the exprtk <https://www.partow.net/programming/exprtk/index.html> mathematical expression parsing and evaluation library to CODAC SUP.

Key Features

  • Exposes exprtk’s powerful mathematical expression parsing and evaluation capabilities.

  • Supports scalar and vector variables for flexible expression evaluation.

  • Handles variable assignments within expressions.

  • Provides robust error handling through custom exceptions.

  • The ExpressionContext class acts as the main entry point for evaluating expressions. It:

    • Collects variables from the expression.

    • Retrieves their values from the IVariableStore.

    • Evaluates the expression using exprtk.

    • Updates variables in the IVariableStore if assignments are present in the expression.

Example

#include "expression_context.h"
#include "my_variable_store.h"  // Your implementation of IVariableStore

sup::mathexpr::MyVariableStore var_store;
sup::mathexpr::ExpressionContext context(var_store);

std::string expression = "x + y * 2";
double result = context.EvaluateExpression(expression);
std::cout << "Result: " << result << std::endl;

Indices and tables