Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

?tgsen

Reorders the generalized Schur decomposition of a pair of matrices (A,B) so that a selected cluster of eigenvalues appears in the leading diagonal blocks of (A,B).

Syntax

call stgsen
(
ijob
,
wantq
,
wantz
,
select
,
n
,
a
,
lda
,
b
,
ldb
,
alphar
,
alphai
,
beta
,
q
,
ldq
,
z
,
ldz
,
m
,
pl
,
pr
,
dif
,
work
,
lwork
,
iwork
,
liwork
,
info
)
call dtgsen
(
ijob
,
wantq
,
wantz
,
select
,
n
,
a
,
lda
,
b
,
ldb
,
alphar
,
alphai
,
beta
,
q
,
ldq
,
z
,
ldz
,
m
,
pl
,
pr
,
dif
,
work
,
lwork
,
iwork
,
liwork
,
info
)
call ctgsen
(
ijob
,
wantq
,
wantz
,
select
,
n
,
a
,
lda
,
b
,
ldb
,
alpha
,
beta
,
q
,
ldq
,
z
,
ldz
,
m
,
pl
,
pr
,
dif
,
work
,
lwork
,
iwork
,
liwork
,
info
)
call ztgsen
(
ijob
,
wantq
,
wantz
,
select
,
n
,
a
,
lda
,
b
,
ldb
,
alpha
,
beta
,
q
,
ldq
,
z
,
ldz
,
m
,
pl
,
pr
,
dif
,
work
,
lwork
,
iwork
,
liwork
,
info
)
call tgsen
(
a
,
b
,
select
[
,
alphar
]
[
,
alphai
]
[
,
beta
]
[
,
ijob
]
[
,
q
]
[
,
z
]
[
,
pl
]
[
,
pr
]
[
,
dif
]
[
,