OptiCode - Dr. Martin Sander Software Dev.

OptiVec for C++ Builder
Trial versionOptiVec: Speed Up Your C++ Math Operations
Windows
CMath for Visual C++
Trial versionCMATH: Fast, Accurate Complex Math for Visual C++
Windows
CMath for Delphi
Trial versionCMATH: Comprehensive Complex-Number Math Library for Delphi
Windows
OptiVec for GCC
FreeGet a high-performance vector and matrix lib for linear systems, signal processing, data fitting.
Windows
OptiVec for Visual C++
Trial versionComprehensive Overview of OptiVec for Visual C++
Windows
CMath for C++ Builder (formerly Borland C++)
Trial versionCMATH: Fast and Accurate Complex Math Library for C++
Windows
OptiVec for Delphi
Trial versionHigh-Performance Vector Library for Delphi
Windows