Package installation

Nuget

PM> Install-Package MathParser.org-mXparser -Version 4.4.2

Maven

<groupId>org.mariuszgromada.math</groupId>
<artifactId>MathParser.org-mXparser</artifactId>
<version>4.4.2</version>

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MathParser.org-mXparser

mXparser - optional donation

mXparser - a super easy, rich and highly flexible Mathematical Expression Parser (Math Parser, Expression Evaluator) library for JAVA, Android and C# .NET.

### 15.10.2020: first 500000 downloads!
### 20.12.2019: first 250000 downloads!
### 01.01.2019: first 100000 downloads!
### 01.08.2018: first 60000 downloads!
### 20.11.2017: first 20000 downloads!
### 01.09.2017: first 15000 downloads!
### 04.05.2017: first 10000 downloads!
### 31.03.2016: first 1000 downloads!

mXparser is a highly flexible parser of mathematical expressions provided as text. Software delivers easy to use API for JAVA and C# .NET.

Supported frameworks

• JAVA: 6+
• Android - tested with mxparser compiled using jdk 1.7
• .NET Framework (2+) / MONO CLS
• .NET Core: 1+
• .NET Standard: 1+
• .NET PCL
• Xamarin

JAVA intro

C# intro

Tutorial

>>> Click to learn from examples <<<

Main functionalities:

• basic operators, i.e.: +, -, *, ^, !
• Boolean logic operators i.e.: or, and, xor
• binary relations i.e.: =, <, >
• math functions (large library of 1-arg, 2-arg, 3-arg - functions) i.e.: sin, cos, Stirling numbers, log, inverse functions
• constants (large library), i.e.: pi, e, golden ratio
• n-args functions, i.e.: greatest common divisor
• iterated summation and product operators
• differentiation and integration

High flexibility functionalities

• user defined constants and arguments, both free - and dependent on other arguments + possibility of use in functions
• user defined functions (both free and depended)
• user defined recursive arguments + simple (controlled) recursion (1 recursive argument)
• user defined recursive functions / expressions (any) - complex, many arguments, no limitation
• internal syntax checking
• internal help
• other useful functionalities, i.e.: computing time, expression description.

Project documentation

- mXparser - API (english)

- mXparser - WIKI (english)

- mXparser - Tutorial (english)

- MathSpace.pl - site about math with mXparser examples (polish)

- MathParser.org - site about mXparser (english)

mXparser in nutshell

You want simple calculator...

Expression e = new Expression("2+3");
e.calculate();

👍

A calculator supporting parenthesis...

Expression e = new Expression("2+(3-5)^2");
e.calculate();

👍

You care about predefined constants...

Expression e = new Expression("2*pi");
e.calculate();

👍

You need to define your own constants...

Constant tau = new Constant("tau = 2*pi");
Expression e = new Expression("3*tau", tau);
e.calculate();

👍

You enjoy using many built-in functions...

Expression e = new Expression("sin(2*pi)");
e.calculate();

👍

You do not limit yourself to unary functions...

Expression e = new Expression("gcd(2,5,10,30)");
e.calculate();

👍

What about user defined arguments...

Argument x = new Argument("x = 5");
Expression e = new Expression("sin(x)");
e.calculate();

👍

You are considering dependent arguments...

Argument x = new Argument("x = 5");
Argument y = new Argument("y = 2*x", x);
Expression e = new Expression("sin(y)", y);
e.calculate();

👍

You need to apply some logic...

Argument x = new Argument("x = 5");
Expression e = new Expression("if(sin(x) > 5, 1, 0)", x);
e.calculate();

👍

Yes, you are right, there is a support for Boolean algebra!

Expression e = new Expression("5=6");
e.calculate();

👍

And for binary relations as well!

Expression e = new Expression("5 <= 6");
e.calculate();

👍

mXparser is cool! But this is only the begging, we are just warming up!

You want to play with iterated operators...

Expression e = new Expression("sum(i, 1, 10, 2*i^2 + pi)");
e.calculate();

👍

You want to iterate differently by not necessarily whole numbes...

Expression e = new Expression("prod(i, 1, 5, i, 0.5)");
e.calculate();

👍

You want to have more fun with math...

Argument x = new Argument("x = pi/2");
Expression e20 = new Expression("sum(n,0,10,(-1)^n*(x^(2*n+1))/(2*n+1)!)", x);
e.calculate();

👍

You still want more fun with calculus operations, i.e. differentiation...

Argument x = new Argument("x = pi/2");
Expression e = new Expression("cos(x)-der(sin(x), x)", x);
e.calculate();

👍

And definite integrals as well...

Expression e = new Expression("2*int(sqrt(1-x^2), x, -1, 1)");
e.calculate();

👍

mXparser is even cooler! It is time to ask about ...

user defined functions...

Function f = new Function("f(x,y) = sin(x) + cos(y)");
f.calculate(1,2);
Expression e = new Expression("f(1,2) - 10", f);
e.calculate();

👍

Recursion is your desire...

Function f = new Function("f(n) = if( n>0, n*f(n-1), 1)");
f.calculate()

👍

Any kind of recursion...

Function Cnk = new Function("Cnk(n,k) = if(k>0, if(k<n, Cnk(n-1,k-1)+Cnk(n-1,k), 1), 1)");
Cnk.calculate()

👍

If anything above matches you then mXparser is a good choce! mXparser is freely distributed under Simplified BSD licence, but still you can give credits to the author, and even donate if you wish 👍

mXparser can interact with end users as it supports syntax checking.

Expression e = new Expression("2+1/a");
e.checkSyntax();
mXparser.consolePrintln(e.getErrorMessage());

Built-in tokens

Number format

Operators

Boolean Operators

Bitwise Operators

Binary Relations

Unary Functions

Binary Functions

3-args Functions

Variadic Functions

Calculus Operators / Iterated Operators

Random Variables

Mathematical Constants

Physical Constant

Astronomical Constant

Metric prefixes

Units of length

Units of area

Units of volume

Units of time

Units of mass

Units of information

Units of energy

Units of speed

Units of acceleration

Units of angle

Other parser symbols

Enjoy :-)

Best regards, Mariusz Gromada