Scaled vector accumulation

F_SAXPBY/F_DAXPBY/F_CAXPBY/F_ZAXPBY

 

INCY

Increment for the array y. A vector y having component

 

 

yi, i = 1,..., n, is stored in an array Y() with increment

 

 

argument incy. If incy > 0 then yi is stored in

 

 

Y(1 + (i - 1) x incy). If incy < 0 then yi is stored in

 

 

Y(1 + (N - i) x incy). incy = 0 is an illegal value.

Output

Y

The updated array replaces the input.

 

 

y ← αx + βy

Chapter 2 Basic Vector Operations 163