Function cblas::cher2k

pub unsafe fn cher2k(
    layout: Layout, 
    uplo: Part, 
    trans: Transpose, 
    n: i32, 
    k: i32, 
    alpha: c32, 
    a: &[c32], 
    lda: i32, 
    b: &[c32], 
    ldb: i32, 
    beta: f32, 
    c: &mut [c32], 
    ldc: i32
)