LAPACK  3.7.0
LAPACK: Linear Algebra PACKage
void cblas_dgemv ( const CBLAS_LAYOUT  layout,
const CBLAS_TRANSPOSE  TransA,
const int  M,
const int  N,
const double  alpha,
const double *  A,
const int  lda,
const double *  X,
const int  incX,
const double  beta,
double *  Y,
const int  incY 
)