The FORTRAN level-1 BLAS call for this operation is
Here is replaced by S, D, C, or Z to indicate the data type of the operands (single, double, complex, double precision complex). Parameter N equals the length of the vectors, n . Parameter ALPHA passes the scaling factor . Parameters X, and Y equal the addresses of where vectors x , and y start in memory. The strides for the vectors are given in INCX and INCY.