pub unsafe fn stgexc(
layout: Layout,
wantq: i32,
wantz: i32,
n: i32,
a: &mut [f32],
lda: i32,
b: &mut [f32],
ldb: i32,
q: &mut [f32],
ldq: i32,
z: &mut [f32],
ldz: i32,
ifst: &mut [i32],
ilst: &mut [i32],
) -> i32