Function cblas::cher2

pub unsafe fn cher2(
    layout: Layout, 
    uplo: Part, 
    n: i32, 
    alpha: c32, 
    x: &[c32], 
    incx: i32, 
    y: &[c32], 
    incy: i32, 
    a: &mut [c32], 
    lda: i32
)