DTZT02
Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
November 2006
November 2006
Purpose
DTZT02 returns
|| I - Q'*Q || / ( M * eps)
where the matrix Q is defined by the Householder transformations
generated by DTZRQF.
|| I - Q'*Q || / ( M * eps)
where the matrix Q is defined by the Householder transformations
generated by DTZRQF.
Arguments
| M |
(input) INTEGER
The number of rows of the matrix AF.
|
| N |
(input) INTEGER
The number of columns of the matrix AF.
|
| AF |
(input) DOUBLE PRECISION array, dimension (LDA,N)
The output of DTZRQF.
|
| LDA |
(input) INTEGER
The leading dimension of the array AF.
|
| TAU |
(input) DOUBLE PRECISION array, dimension (M)
Details of the Householder transformations as returned by
DTZRQF. |
| WORK |
(workspace) DOUBLE PRECISION array, dimension (LWORK)
|
| LWORK |
(input) INTEGER
length of WORK array. Must be >= N*N+N
|