MathString is a class designed for C++Builder™ 3, 4, 5 and 6.  The demo application gives you the opportunity to test the features of MathString.  Source code is supplied as part of registration.

MathString is essentially a very powerful class capable of performing mathematical calculations to a precision greater than that offered by your default math routines. Also included is another class known as TMathEvaluator. This can take an expression (as a string) and evaluate it.  MathString allows you to perform arithmetic to any precision and magnitude. It supports addition, subtraction, multiplication, division, factorial, absolute value, modulus, reciprocal, square, power, square root, nth root and more. Additional formulae are being added as they are requested.

MathString also supports AnsiString's, int's, long's and Extended data types. This CDT (concrete data type) is especially useful for financial calculations that require a precision greater than that offered by general compiled code.

TMathEvaluator will take a string holding an expression and evaluate it with true order of operations. It currently supports (), +, -, *, /, % and ^ (power).  Future versions may allow for functions such as square root etc.

Documentation and source code is provided with registration.

You can get the PDF version of the manual here.