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The tutorial consists of more than 200 live examples from 50 sections. Each of the examples can be copied and run on your own environment. In addition, mXparser provides an extensive collection of over 500 built-in math functions, expressions and symbols. Familiarize yourself with the scope and the syntax. Live testing is the best way to learn. Good luck! 🙂
Tutorial Math Collection API spec Download
Below is the code for JAVA, the code for C# is almost identical.
Case 1: Function returning number of parameters provided
import org.mariuszgromada.math.mxparser.*; ... Function f = new Function("f(...) = [npar]"); Expression e1 = new Expression("f(5)", f); Expression e2 = new Expression("f(5,2)", f); Expression e3 = new Expression("f(5,2,4)", f); mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate()); mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate()); mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: f(5) = 1.0 [mXparser-v.5.0.0] Res 2: f(5,2) = 2.0 [mXparser-v.5.0.0] Res 3: f(5,2,4) = 3.0
Case 2: Function returning sum of first and last parameter provided
import org.mariuszgromada.math.mxparser.*; ... Function f = new Function("f(...) = par(1) + par([npar])"); Expression e1 = new Expression("f(5)", f); Expression e2 = new Expression("f(5,2)", f); Expression e3 = new Expression("f(5,2,4)", f); mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate()); mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate()); mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: f(5) = 10.0 [mXparser-v.5.0.0] Res 2: f(5,2) = 7.0 [mXparser-v.5.0.0] Res 3: f(5,2,4) = 9.0
Case 3: Function returning parameter at position defined by the first parameter
import org.mariuszgromada.math.mxparser.*; ... Function f = new Function("f(...) = par(par(1))"); Expression e1 = new Expression("f(5)", f); Expression e2 = new Expression("f(1,2)", f); Expression e3 = new Expression("f(3,2,4)", f); mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate()); mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate()); mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: f(5) = NaN [mXparser-v.5.0.0] Res 2: f(1,2) = 1.0 [mXparser-v.5.0.0] Res 3: f(3,2,4) = 4.0
Case 4: Function returning sum of all parameters squared
import org.mariuszgromada.math.mxparser.*; ... Function f = new Function("f(...) = sum(i, 1, [npar], par(i)^2)"); Expression e1 = new Expression("f(5)", f); Expression e2 = new Expression("f(1,2)", f); Expression e3 = new Expression("f(3,2,4)", f); mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate()); mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate()); mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: f(5) = 25.0 [mXparser-v.5.0.0] Res 2: f(1,2) = 5.0 [mXparser-v.5.0.0] Res 3: f(3,2,4) = 29.0
Case 5: Implementing your own Variadic Function Extension
import org.mariuszgromada.math.mxparser.*; ... class SumVar implements FunctionExtensionVariadic { public double calculate(double... parameters) { if (parameters == null) return Double.NaN; if (parameters.length == 0) return Double.NaN; double result = 0; for (double x : parameters) result+=x; return result; } public FunExtVar clone() { return new FunExtVar(); } }
import org.mariuszgromada.math.mxparser.*; ... Function sumVar = new Function("sumVar", new SumVar()); Expression e1 = new Expression("sumVar(1)", sumVar); Expression e2 = new Expression("sumVar(1,2)", sumVar); Expression e3 = new Expression("sumVar(1,2,3)", sumVar); mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate()); mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate()); mXparser.consolePrintln("Res 3: " + e3.getExpressionString() + " = " + e3.calculate());
[mXparser-v.5.0.0] Res 1: sumVar(1) = 1.0 [mXparser-v.5.0.0] Res 2: sumVar(1,2) = 3.0 [mXparser-v.5.0.0] Res 3: sumVar(1,2,3) = 6.0
Nuget – Package Manager
Install-Package
MathParser.org-mXparser
-Version
5.2.0
dotnet add package
MathParser.org-mXparser
--version
5.2.0
<PackageReference Include=
"MathParser.org-mXparser"
Version=
"5.2.0"
/>
Maven – Dependency
<dependency>
<groupid>org.mariuszgromada.math
</groupid>
<artifactid>MathParser.org-mXparser
</artifactid>
<version>5.2.0
</version>
</dependency>
Maven – Gradle
implementation
'org.mariuszgromada.math:MathParser.org-mXparser:5.2.0'
Maven – Gradle (Kotlin)
implementation(
"org.mariuszgromada.math:MathParser.org-mXparser:5.2.0"
)
GitHub
git clone
https://github.com/mariuszgromada/MathParser.org-mXparser
OTHER DOWNLOAD OPTIONS
Download latest release – v.5.2.0 Orion: .NET bin onlyDownload latest release – v.5.2.0 Orion: JAVA bin onlyDownload latest release – v.5.2.0 Orion: bin + doc
NEWS FROM MATHPARSER.ORG
SOURCE CODE
Source code .zipSource code .tar.gz
View on GitHubMathSpace.pl