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The C++ Mathematical Expression Library (ExprTk) is a simple to use, easy to integrate and extremely efficient and fast mathematical expression parsing and evaluation engine. The parsing engine supports various kinds of functional, logic processing semantics and is very easily extendible. ... [More] http://www.partow.net/programming/exprtk/index.html Mathematical operators (+, -, *, /, %, ^) Functions (min, max, avg, sum, abs, ceil, floor, round, roundn, exp, log, log10, logn, root, sqrt, clamp, range) Trigonometry (sin, cos, tan, acos, asin, atan, atan2, cosh, cot, csc, sec, sinh, tanh, d2r, r2d, d2g, g2d, hyp) Equalities, Inequalities and Assigment (=, ==, , !!=, , >=, :=, <-) Boolean logic, conditional statements and while-loop construct (and, or, xor, not, nand, no [Less]

An Open Source, web based data cleaning and coding system. queXC takes a data file (such as questionnaire data) and cleans the text input fields by spacing and spell checking them. Operators then code text fields using new/existing coding schemes.