pub unsafe fn dtgsna(
job: u8,
howmny: u8,
select: &[i32],
n: i32,
a: &[f64],
lda: i32,
b: &[f64],
ldb: i32,
vl: &[f64],
ldvl: i32,
vr: &[f64],
ldvr: i32,
s: &mut [f64],
dif: &mut f64,
mm: i32,
m: &mut i32,
work: &mut [f64],
lwork: i32,
iwork: &mut [i32],
info: &mut i32,
)