Function cblas_dspmv 

pub unsafe extern "C" fn cblas_dspmv(
    order: Order,
    sym: Symmetry,
    n: u32,
    alpha: c_double,
    a: *const c_double,
    x: *const c_double,
    inc_x: u32,
    beta: c_double,
    y: *mut c_double,
    inc_y: u32,
)