Triangular packed matrix-vector multiply

F_STPMV/F_DTPMV/F_CTPMV/F_ZTPMV

 

INCX

Increment for the array x. A vector x having component

 

 

xi, i = 1,..., n, is stored in an array X() with increment

 

 

argument incx. If incx > 0 then xi is stored in

 

 

X (1 + (i - 1) x incx). If incx < 0 then xiis stored in

 

 

X (1 + (N - i) x incx). incx = 0 is an illegal value.

Output

X

The updated X vector replaces the input.

Chapter 3 Basic Matrix Operations 405