hseqr

Computes eigenvalues of an upper Hessenberg matrix using the QR algorithm, optionally computing the Schur vectors.

size_t hseqr(char job, char compz, Slice!(T*, 2, Canonical) h, Slice!(T*) w, Slice!(T*, 2, Canonical) z, Slice!(T*) work, lapackint ilo, lapackint ihi)
size_t hseqr(char job, char compz, Slice!(T*, 2, Canonical) h, Slice!(T*) wr, Slice!(T*) wi, Slice!(T*, 2, Canonical) z, Slice!(T*) work, lapackint ilo, lapackint ihi)
@trusted pure nothrow @nogc
size_t
hseqr
(
T
)
(
char job
,
char compz
,
Slice!(T*, 2, Canonical) h
,
Slice!(T*) wr
,
Slice!(T*) wi
,
Slice!(T*, 2, Canonical) z
,
Slice!(T*) work
,
lapackint ilo
,
lapackint ihi
)
if (
!isComplex!T
)