lapacke
pub unsafe fn strevc( layout: Layout, side: u8, howmny: u8, select: &mut [i32], n: i32, t: &[f32], ldt: i32, vl: &mut [f32], ldvl: i32, vr: &mut [f32], ldvr: i32, mm: i32, m: &mut i32) -> i32