This
JSPWiki plugin evaluates numerical expressions with or without parameters. The usage would be like this:
[{Evaluate expr='2*x + y - 42' x='16' y='13' showExpr='true' showVars='true'}]
And the result would be:
2*x + y - 42 = 3.0 (x=16.0, y=13.0)
If the showExpr parameter is missing or false, the result would just be
3.0
If the showVars parameter is missing or false, the result would be
2*x + y - 42 = 3.0
Parameters names can be 'a' through 'z'.
The source code is here. It needs the ExprJava class (where the expression syntax and the available functions are explained further). A jar file containing all my JSPWiki plugins is here.
CodeSnippets
