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The tutorial consists of more than 200 live examples from 50 sections given separately for JAVA, C# and C++. 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, C# (the code for C# is almost identical) and C++. To copy the code, double-click inside the frame.
Case 1: NaN in condition
Java/C# code
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using 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());
C++ code
#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ArgumentPtr x = new_Argument("x = 1");
ExpressionPtr 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());
Code result
[mXparser-v.5.2.1] Res 1: x = 1.0, if( isNaN( 2 / x ), 1, -1 ) = -1.0
[mXparser-v.5.2.1] Res 2: x = 0.0, if( isNaN( 2 / x ), 1, -1 ) = 1.0
Case 2: NaN symbol
Java/C# code
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using 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());
C++ code
#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ArgumentPtr x = new_Argument("x = 1");
ExpressionPtr 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());
Code result
[mXparser-v.5.2.1] Res 1: x = 1.0, if( x >= 1, 1, [NaN] ) = 1.0
[mXparser-v.5.2.1] Res 2: x = 0.0, if( x >= 1, 1, [NaN] ) = NaN
Case 3: First non-NaN valueon the list
Java/C# code
// JAVA: import org.mariuszgromada.math.mxparser.*;
// C#: using 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());
C++ code
#include "org/mariuszgromada/math/mxparser.hpp"
// ...
ArgumentPtr x = new_Argument("x = 1");
ExpressionPtr 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());
Code result
[mXparser-v.5.2.1] Res 1: x = 1.0, coalesce( 2/0 , x , 3) = 1.0
[mXparser-v.5.2.1] Res 2: x = NaN, coalesce( 2/0 , x , 3) = 3.0
Nuget – Package Manager (C#, F#, Visual Basic, …)
Install-Package MathParser.org-mXparser -Version 6.1.0
dotnet add package MathParser.org-mXparser --version 6.1.0
<PackageReference Include="MathParser.org-mXparser" Version="6.1.0"/>
Maven – Dependency (Java, Kotlin, Scala, Groovy, …)
<dependency>
<groupid>org.mariuszgromada.math</groupid>
<artifactid>MathParser.org-mXparser</artifactid>
<version>6.1.0</version>
</dependency>
Maven – Gradle
implementation 'org.mariuszgromada.math:MathParser.org-mXparser:6.1.0'
CMake – Dependency / FetchContent (C++, MSVC, LLVM/Clang, GNU/GCC, MinGW, MSYS2, WSL, Windows, Linux, Unix, MacOS)
include(FetchContent)
FetchContent_Declare(
MathParserOrgMxParser
GIT_REPOSITORY https://github.com/mariuszgromada/MathParser.org-mXparser.git
GIT_TAG v.6.1.0
SOURCE_SUBDIR CURRENT/cpp/lib
)
FetchContent_MakeAvailable(MathParserOrgMxParser)
target_link_libraries(YourExecutable MathParserOrgMxParser)
GitHub
git clone https://github.com/mariuszgromada/MathParser.org-mXparser
OTHER DOWNLOAD OPTIONS
Download latest release – v.6.1.0 Sagitara: .NET bin onlyDownload latest release – v.6.1.0 Sagitara: JAVA bin onlyDownload latest release – v.6.1.0 Sagitara: bin + doc
NEWS FROM MATHPARSER.ORG
SOURCE CODE
Source code .zipSource code .tar.gz
View on GitHubMathSpace.pl
