Name: Expression Parser
Brand: ULTRAMEGA A/S

Why Expression Parser?

Hard-coded mathematical expressions force you to recompile every time a formula changes. Expression Parser lets you define and modify calculations at runtime. No rebuilds, no downtime, no code changes.

Test Systems

Modify test calculations without recompiling. Dynamic formulas for automated test sequences.

Machine Control

Runtime signal conditioning and control algorithms. Tune formulas without stopping production.

Simulations

Experiment with mathematical models on-the-fly. Change parameters and formulas during execution.

Function Library

440+ functions for engineering and scientific applications

120+

Mathematical Functions

Trigonometry, algebra, calculus, statistics, probability, Bessel functions, gamma functions, and more.

50+

Physics Functions

Classical mechanics, thermodynamics, electromagnetism, quantum mechanics, optics.

35+

Electronics Functions

Circuit analysis, power calculations, filter design, impedance, digital logic.

45+

Logic & Boolean

Boolean algebra, bitwise operations, set theory, fuzzy logic, comparisons.

80+

Unit Conversions

Length, mass, temperature, energy, pressure, frequency, and more unit systems.

47

Physical Constants

Speed of light, Planck constant, gravitational constant, Avogadro number, and more.

Code Examples

Simple integration with your .NET applications

Basic Usage

using ULTRAMEGA.ExpressionParser;

var evaluator = new ExpressionEvaluator();

// Simple calculations
double result1 = evaluator.Evaluate("2 + 3 * 4");       // 14
double result2 = evaluator.Evaluate("sin(pi/4)");       // 0.7071
double result3 = evaluator.Evaluate("sqrt(25)");        // 5

// Using variables
evaluator.SetVariable("x", 5);
evaluator.SetVariable("y", 3);
double result4 = evaluator.Evaluate("x^2 + y^2");       // 34

Engineering Calculation

// Beam deflection: δ = FL³/(48EI)
evaluator.SetVariable("F", 10000);      // Force (N)
evaluator.SetVariable("L", 6);          // Length (m)
evaluator.SetVariable("E", 200e9);      // Young's modulus (Pa)
evaluator.SetVariable("I", 8.33e-6);    // Second moment (m⁴)

string formula = "F * L^3 / (48 * E * I)";
double deflection = evaluator.Evaluate(formula);

// Change formula at runtime - no recompile needed
formula = "F * L^3 / (3 * E * I)";  // Cantilever beam
double newDeflection = evaluator.Evaluate(formula);

Physics with Constants

// Orbital period using built-in constants
evaluator.SetVariable("M", 5.972e24);   // Earth mass (kg)
evaluator.SetVariable("r", 7000e3);     // Orbital radius (m)

// G (gravitational constant) is built-in
string period = "2 * pi * sqrt(r^3 / (G * M))";
double T = evaluator.Evaluate(period);

// Orbital velocity
double v = evaluator.Evaluate("sqrt(G * M / r)");

Technical Specifications

Performance

Evaluation: < 1ms
Memory: < 5MB
Thread-safe: Yes

Compatibility

.NET Framework 4.7.2+
.NET Core 3.1+
.NET 5, 6, 7, 8

Features

Detailed error messages
Expression validation
Custom function support

Expression
Parser