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Mathematical programs

ru

Expression parser of strings like sin(pi/4) is written in c++, javascript, java and php. It is also possible to create functions x0+2*sin(pi*x1) for further calculations.

Combinations and permutations enumeration program is written in c++, java and javascript.

Scientific calculator is written on c++, java and javascript.

Plotter draws graphs online in standard y(x), polar r(a) or parametric x(t), y(t) coordinates. Program is written on c++, java and javascript.

Fractals screensaver which draws nice fractal pictures. Program is written on c++ and java.

C++

Big numbers library of c++ classes to perform operations with big signed and unsigned integers of arbitrary precision. Template class Fraction presents rational numbers.

Library for working with cgi. A library to automatically reading cgi and cookie input parameters.

Library for working with excel files. Creation, deleting, editing of xls files, without #import instruction.

Matrix library If you need work with matrices this program for you. I've wrote c++ class Matrix and define simple operations which are addition, subtraction, multiplication, division etc. It's not a program it just c++ code.

Memory library Helper c++ template class for the automatic allocation and deallocation of memory for the one, two or three dimensional array.