blas
The basic linear algebra system is a package that provides classes for integer, real, and complex matrices and vectors; which forward the actual calculations to the corresponding methods of the jTEM packages mfc and numericalMethods.An important feature of blas is the wide range of operations that mix the different types.
Vectors and matrices are internally represented as arrays of ordinary types (int and double). These arrays are one-dimensional for vectors and two-dimensional for matrices. This representation has performance reasons. The data can be accessed by and easily passed to other methods.