lapacke
pub unsafe fn ctrevc( layout: Layout, side: u8, howmny: u8, select: &[i32], n: i32, t: &mut [c32], ldt: i32, vl: &mut [c32], ldvl: i32, vr: &mut [c32], ldvr: i32, mm: i32, m: &mut i32) -> i32