|
version 1.7, 2010/12/21 13:53:44
|
version 1.8, 2011/07/22 07:38:14
|
|
Line 1
|
Line 1
|
| SUBROUTINE ZGEQRF( M, N, A, LDA, TAU, WORK, LWORK, INFO ) |
SUBROUTINE ZGEQRF( M, N, A, LDA, TAU, WORK, LWORK, INFO ) |
| * |
* |
| * -- LAPACK routine (version 3.2) -- |
* -- LAPACK routine (version 3.3.1) -- |
| * -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- LAPACK is a software package provided by Univ. of Tennessee, -- |
| * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
| * November 2006 |
* -- April 2011 -- |
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| INTEGER INFO, LDA, LWORK, M, N |
INTEGER INFO, LDA, LWORK, M, N |
|
Line 69
|
Line 69
|
| * |
* |
| * Each H(i) has the form |
* Each H(i) has the form |
| * |
* |
| * H(i) = I - tau * v * v' |
* H(i) = I - tau * v * v**H |
| * |
* |
| * where tau is a complex scalar, and v is a complex vector with |
* where tau is a complex scalar, and v is a complex vector with |
| * v(1:i-1) = 0 and v(i) = 1; v(i+1:m) is stored on exit in A(i+1:m,i), |
* v(1:i-1) = 0 and v(i) = 1; v(i+1:m) is stored on exit in A(i+1:m,i), |
|
Line 171
|
Line 171
|
| CALL ZLARFT( 'Forward', 'Columnwise', M-I+1, IB, |
CALL ZLARFT( 'Forward', 'Columnwise', M-I+1, IB, |
| $ A( I, I ), LDA, TAU( I ), WORK, LDWORK ) |
$ A( I, I ), LDA, TAU( I ), WORK, LDWORK ) |
| * |
* |
| * Apply H' to A(i:m,i+ib:n) from the left |
* Apply H**H to A(i:m,i+ib:n) from the left |
| * |
* |
| CALL ZLARFB( 'Left', 'Conjugate transpose', 'Forward', |
CALL ZLARFB( 'Left', 'Conjugate transpose', 'Forward', |
| $ 'Columnwise', M-I+1, N-I-IB+1, IB, |
$ 'Columnwise', M-I+1, N-I-IB+1, IB, |
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to zgeqrf.f CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [local] / rpl / lapack / lapack