Optivec for Borland C/C++ comes with libraries of vector, matrix, and complex math functions for PC compilers.
Most programs that process numerical data consist of loops. But loop overhead is unnecessarily slow.

Replacing these loops by hand-optimized, Assembler-written vector functions and matrix routines speeds up program execution by up to a factor of 2-3 and also greatly enhances numerical accuracy.

OptiVec Brings the Power of Vectorized Programming to the PC!
OptiVec is a complete, hand-optimized set of libraries with over 3500 vector and matrix functions, and complex-number math routines.

OptiVec contains the fully vectorized forms of all operators and math functions of C/C++/Pascal/Delphi for all integer and floating-point (including complex) data types, plus many other real and complex math functions and routines for statistics, analysis, FFT techniques, curve fitting, interpolations, vector and matrix algebra, matrix decomposition, and graphics.
In parts, OptiVec overlaps with the well-known BLAS and LINPACK libraries, but features an easier nomenclature and a generally more efficient implementation.