Input matrix A:
[       -8       -3        6       -8        1        6      -10       -6
         5        9        0        0      -10       10        7       -6
        -6       -9        5        7      -10       -7      -10      -10
        -7       -7       -5        0        6       10        5        2
        10        2       -6        4       -2       -4       -8       -2 ]

Input vector x:
( -1 -9 -5 -5 -6 -8 3 2 )

Result vector DGEMV:
( -51 -97 93 -2 -2 )

Result vector naive:
( -51 -97 93 -2 -2 )

Adding to previous result with beta=2:

Result vector DGEMV:
( -153 -291 279 -6 -6 )

Result vector naive:
( -153 -291 279 -6 -6 )