java.math.expression.parser
ExprTK
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| java.math.expression.parser | ExprTK | |
|---|---|---|
| 2 | 10 | |
| 35 | 570 | |
| - | - | |
| 6.1 | 0.0 | |
| 4 months ago | 4 months ago | |
| Java | C++ | |
| Apache License 2.0 | - |
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java.math.expression.parser
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is there premade function that gets mathematical Strings ( for example "(3+4+5)/sqr(20)") and returns result
Not built in to the Java language or SDK, but there's open source libraries such as https://github.com/sbesada/java.math.expression.parser that will do what you want.
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Can't figure out "java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Double" error
You might then want to use some specific math parser Java library. E.g. this sbesada/java.math.expression.parser.
ExprTK
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A Cpp library to evaluate mathematical literal expressions dynamically
I have found many libraries that can evaluate mathematical expressions, e.g. this one: https://www.partow.net/programming/exprtk/index.html
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Better library for evaluating math expressions stored on a String
I have used https://github.com/ArashPartow/exprtk for this task, since it is cpp we also used on IOS, however in android we changed to exp4j since it requires less space and did the same job.
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What do I do if a repo only has a make file and I'm on windows?
For the specific example repo you cited, the project website also offers some preconfigured example MSVC solutions. You may find this much easier to get set up and running if using a Makefile is not a hard requirement.
- What are some projects that taught you a lot?
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How to calculate an expression that is stored in a string in C++
This ExprTk library looks promising: https://www.partow.net/programming/exprtk/index.html
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A boolean logic simulator written in c++ & opengl 3.3. This is a toy project I'm currently developing to help me learn c++ & opengl. No libraries used, apart from stb_image and glad.
Now there are lots of libraries out there for expression processing as well. I would recommend exprtk: https://github.com/ArashPartow/exprtk
- library for solving equations from string?
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Regular language input math operations
If your actual goal isn't to implement it yourself and you need it for something else, take a look at this library: https://github.com/ArashPartow/exprtk
What are some alternatives?
aviatorscript - A high performance scripting language hosted on the JVM.
TinyExpr - tiny recursive descent expression parser, compiler, and evaluation engine for math expressions
MathParser.org-mXparser - Math Parser Java Android C# .NET/MONO (.NET Framework, .NET Core, .NET Standard, .NET PCL, Xamarin.Android, Xamarin.iOS) CLS Library - a super easy, rich and flexible mathematical expression parser (expression evaluator, expression provided as plain text / strings) for JAVA and C#. Main features: rich built-in library of operators, constants, math functions, user defined: arguments, functions, recursive functions and general recursion (direct / indirect). Additionally parser provides grammar and internal syntax checking.
muparser - muparser is a fast math parser library for C/C++ with (optional) OpenMP support.
JavaParser - Java 1-17 Parser and Abstract Syntax Tree for Java with advanced analysis functionalities.
CGal - The public CGAL repository, see the README below
ExpressionEvaluator - A Simple Math and Pseudo C# Expression Evaluator in One C# File. Can also execute small C# like scripts
Eigen
GLM - OpenGL Mathematics (GLM)
OpenBLAS - OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
Boost.Multiprecision - Boost.Multiprecision
QuantLib - The QuantLib C++ library