This is the Linux app named mep4j whose latest release can be downloaded as mep4j-1.0.1.jar. It can be run online in the free hosting provider OnWorks for workstations.
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mep4j
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DESCRIPTION
Math Expression Parser 4 Java
MEP4J is a high performance math expression strings parser for Java (J2SE >= 5).
Compare its performance against similiar libraries and let me know your experince.
The library manages the 5 operators (+, -, /, %, *) together with the following functions:
- "abs"
- "cos"
- "sin"
- "acos"
- "asin"
- "cosh"
- "sinh"
- "tan",
- "tanh"
- "atan"
- "sqrt"
- "cbrt"
- "root"
- "log"
- "log10"
- "log1p"
- "exp"
- "expm1"
- "atan2"
- "pow"
The library supports variables (case insensitive), custom and pre-loaded ("e" and "pi").
Example:
int num_variations = 100;
int init_value = 10;
MathParser mathParser = new MathParser();
mathParser.putVariable("x", init_value);
mathParser.parse("2 + (7 - 5) * 3.14159 * pow(x, (12-10)) + sin(-3.141)");
for(int i = init_value; i < num_variations; ++i) {
Double result = mathParser.execute();
mathParser.putVariable("x", i);
}
Features
- Math
- Parser
- Performance
- Java
- String
Audience
Aerospace, Information Technology, Financial and Insurance Industry, Telecommunications Industry, Developers, Security
Programming Language
Java
Categories
This is an application that can also be fetched from https://sourceforge.net/projects/mep4j/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.
