CBLAS Interface to BLAS

CBLAS is a C interface to BLAS routines. Similar to BLAS, the CBLAS interface includes the following levels of functions:

Level 1 (vector-vector operations)

Level 2 (matrix-vector operations)

Level 3 (matrix-matrix operations)

Sparse (operations on sparse vectors)

To obtain the C interface, the Fortran routine names are prefixed with cblas_ (for example, dasum becomes cblas_dasum). Names of all CBLAS functions are in lowercase letters.

Complex functions ?dotc and ?dotu become CBLAS subroutines (void functions); they return the complex result via a void pointer, added as the last parameter. CBLAS names of these functions are suffixed with _sub. For example, the BLAS function cdotc corresponds to cblas_cdotc_sub.