CMATH is a comprehensive library for complex-number arithmetics and mathematics.
Editor: CMATH is a comprehensive library for complex-number arithmetics and mathematics, both in cartesian and in polar coordinates, for C/C++ and Pascal/Delphi compilers. CMATH is available as a stand-alone product. It is also included in the OptiVec package.
All functions may alternatively be called from classic C and Pascal/Delphi with type-specific function names (like cf_sin, cd_exp, pe_sqrt), or from C++ and Delphi with overloaded function names and operators (like sin, exp, sqrt, OperaTor +; operators only in C++). As far as possible, all functions have the same names in the Pascal/Delphi version as in the C/C++ version.

Superior speed, accuracy and safety are achieved through the implementation in Assembly language (as opposed to the compiled or inline code of available complex C++ class libraries). Only for the most simple tasks, alternative inline C++ functions are used in the C++ version.

As far as the scope of CMATH overlaps with the complex class implementations of Visual C++, Borland C++, and Delphi, CMATH is a high-quality replacement for the latter, which are all quite inefficient and inaccurate.

In contrast to the written-down-and-compiled textbook formulas of most other available complex libraries (including those coming with Visual C++ and the Borland compilers), the implementation of CMATH was guided by the following rules:

Without any compromise, top priority is always given to the mathematically correct result, with the accuracy demanded for the respective data type. Especially for complex functions, this necessitates a very thorough treatment of many different situations. To this end, the various cases have to be distinguished with pedantic care.
NEW:
# Integer Matrix functionality added
# Syntax change in all polynomial fitting functions and linear-model fitting functions.
a) the documentation,
b) the include-files (C/C++ versions only), and
c) C++ libraries or Pascal/Delphi units for each Combination of memory model and processor you can free download CMATH for Delphi 2005 5.3 now.