Exp4j
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|
| exp4j | |
|---|---|
| Stable release | 0.4.3
/ 2014-10-10 |
| Repository |
|
| Written in | Java |
| Engine | |
| Type | Math |
| License | Apache License 2.0 |
| Website | www |
exp4j is a small Java library for evaluation of mathematical expressions.[1] It implements Dijkstra's Shunting-yard algorithm to translate expressions from infix notation to Reverse Polish notation and calculates the result using a simple Stack algorithm.
Features
[edit | edit source]- Variables can be used in expressions
- exp4j comes with a set of common built-in functions
- Users can create and use their own custom operators
- Users can create and use their own custom functions
License terms
[edit | edit source]exp4j is released under the terms of the Apache License 2.0
Examples of usage
[edit | edit source]Calculating the result of can be done in the following way:
Expression e = new ExpressionBuilder("3 * (sin(pi) - 2 )/ e")
.variables("pi", "e")
.build()
.setVariable("pi", Math.PI)
.setVariable("e", Math.E);
double result = e.evaluate();
See also
[edit | edit source]- mXparser - Mathematical Expressions Parser / Evaluator
References
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).