Working with NaN – Not-a-Number

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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: NaN in condition

import org.mariuszgromada.math.mxparser.*;
...
Argument x = new Argument("x = 1");
Expression e = new Expression("if( isNaN( 2 / x ), 1, -1 )", x);
mXparser.consolePrintln("Res 1: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(0);
mXparser.consolePrintln("Res 2: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res 1: x = 1.0, if( isNaN( 2 / x ), 1, -1 ) = -1.0
[mXparser-v.5.0.0] Res 2: x = 0.0, if( isNaN( 2 / x ), 1, -1 ) = 1.0

Case 2: NaN symbol

import org.mariuszgromada.math.mxparser.*;
...
Argument x = new Argument("x = 1");
Expression e = new Expression("if( x >= 1, 1, [NaN] )", x);
mXparser.consolePrintln("Res 1: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(0);
mXparser.consolePrintln("Res 2: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res 1: x = 1.0, if( x >= 1, 1, [NaN] ) = 1.0
[mXparser-v.5.0.0] Res 2: x = 0.0, if( x >= 1, 1, [NaN] ) = NaN

Case 3: First non-NaN valueon the list

import org.mariuszgromada.math.mxparser.*;
...
Argument x = new Argument("x = 1");
Expression e = new Expression("coalesce( 2/0 , x , 3)", x);
mXparser.consolePrintln("Res 1: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
x.setArgumentValue(Double.NaN);
mXparser.consolePrintln("Res 2: x = " + x.getArgumentValue() + ", " + e.getExpressionString() + " = " + e.calculate());
[mXparser-v.5.0.0] Res 1: x = 1.0, coalesce( 2/0 , x , 3) = 1.0
[mXparser-v.5.0.0] Res 2: x = NaN, coalesce( 2/0 , x , 3) = 3.0
Nuget – Package Manager

Install-Package MathParser.org-mXparser -Version 5.2.0

Nuget – .NET CLI

dotnet add package MathParser.org-mXparser --version 5.2.0

Nuget – Package Reference

<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

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SOURCE CODE

Source code .zipSource code .tar.gz
View on GitHubMathSpace.pl

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