Function blasoxide::dgemv

pub unsafe fn dgemv(
    trans: bool, 
    m: usize, 
    n: usize, 
    alpha: f64, 
    a: *const f64, 
    lda: usize, 
    x: *const f64, 
    incx: usize, 
    beta: f64, 
    y: *mut f64, 
    incy: usize
)