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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. To copy the code, double-click inside the frame.
Case 1: Mechanics of the if function
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Expression e1 = new Expression("if(2<3, 1, 2)");
Expression e2 = new Expression("if(4<3, 1, 2)");
mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate());
mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate());
[mXparser-v.5.2.1] Res 1: if(2<3, 1, 2) = 1.0
[mXparser-v.5.2.1] Res 2: if(4<3, 1, 2) = 2.0
Case 2: “if” function and arguments
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Argument x = new Argument("x = 2");
Expression e = new Expression("if(x<3, x+2, x-2)", x);
mXparser.consolePrintln("Res 1: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(4);
mXparser.consolePrintln("Res 2: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.2.1] Res 1: x = 2.0, if(x<3, x+2, x-2) = 4.0
[mXparser-v.5.2.1] Res 2: x = 4.0, if(x<3, x+2, x-2) = 2.0
Case 3: “if” function in user defined function
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Function f = new Function("f(x) = if(x<3, x+2, x-2)");
Expression e1 = new Expression("f(2)", f);
Expression e2 = new Expression("f(4)", f);
mXparser.consolePrintln("Res 1: " + e1.getExpressionString() + " = " + e1.calculate());
mXparser.consolePrintln("Res 2: " + e2.getExpressionString() + " = " + e2.calculate());
[mXparser-v.5.2.1] Res 1: f(2) = 4.0
[mXparser-v.5.2.1] Res 2: f(4) = 2.0
Case 4: Mechanics of the “iff” function
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Argument x = new Argument("x = 0.5");
Expression e = new Expression("iff(x<1, 1; x<2, 2; x<3, 3)", x);
mXparser.consolePrintln("Res 1: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(1.5);
mXparser.consolePrintln("Res 2: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(2.5);
mXparser.consolePrintln("Res 3: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(3.5);
mXparser.consolePrintln("Res 4: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.2.1] Res 1: x = 0.5, iff(x<1, 1; x<2, 2; x<3, 3) = 1.0
[mXparser-v.5.2.1] Res 2: x = 1.5, iff(x<1, 1; x<2, 2; x<3, 3) = 2.0
[mXparser-v.5.2.1] Res 3: x = 2.5, iff(x<1, 1; x<2, 2; x<3, 3) = 3.0
[mXparser-v.5.2.1] Res 4: x = 3.5, iff(x<1, 1; x<2, 2; x<3, 3) = NaN
Case 5: “iff” function is not limited in number of cases
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using org.mariuszgromada.math.mxparser;
// ...
Argument x = new Argument("x = 0.5");
Expression e = new Expression("iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5)", x);
mXparser.consolePrintln("Res 1: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(1.5);
mXparser.consolePrintln("Res 2: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(2.5);
mXparser.consolePrintln("Res 3: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(3.5);
mXparser.consolePrintln("Res 4: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(4.5);
mXparser.consolePrintln("Res 5: " + " x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.2.1] Res 1: x = 0.5, iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5) = 1.0
[mXparser-v.5.2.1] Res 2: x = 1.5, iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5) = 2.0
[mXparser-v.5.2.1] Res 3: x = 2.5, iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5) = 3.0
[mXparser-v.5.2.1] Res 4: x = 3.5, iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5) = 4.0
[mXparser-v.5.2.1] Res 5: x = 4.5, iff(x<1, 1; x<2, 2; x<3, 3; x<4, 4; x<5, 5) = 5.0
Nuget – Package Manager
Install-Package
MathParser.org-mXparser
-Version
5.2.1
dotnet add package
MathParser.org-mXparser
--version
5.2.1
<PackageReference Include=
"MathParser.org-mXparser"
Version=
"5.2.1"
/>
Maven – Dependency
<dependency>
<groupid>org.mariuszgromada.math
</groupid>
<artifactid>MathParser.org-mXparser
</artifactid>
<version>5.2.1
</version>
</dependency>
Maven – Gradle
implementation
'org.mariuszgromada.math:MathParser.org-mXparser:5.2.1'
Maven – Gradle (Kotlin)
implementation(
"org.mariuszgromada.math:MathParser.org-mXparser:5.2.1"
)
GitHub
git clone
https://github.com/mariuszgromada/MathParser.org-mXparser
OTHER DOWNLOAD OPTIONS
Download latest release – v.5.2.1 Orion: .NET bin onlyDownload latest release – v.5.2.1 Orion: JAVA bin onlyDownload latest release – v.5.2.1 Orion: bin + doc
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SOURCE CODE
Source code .zipSource code .tar.gz
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