version 1.4, 2010/08/06 15:32:38
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version 1.8, 2011/07/22 07:38:14
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SUBROUTINE ZGELQF( M, N, A, LDA, TAU, WORK, LWORK, INFO ) |
SUBROUTINE ZGELQF( 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 |
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* |
* |
* The matrix Q is represented as a product of elementary reflectors |
* The matrix Q is represented as a product of elementary reflectors |
* |
* |
* Q = H(k)' . . . H(2)' H(1)', where k = min(m,n). |
* Q = H(k)**H . . . H(2)**H H(1)**H, where k = min(m,n). |
* |
* |
* 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; conjg(v(i+1:n)) is stored on exit in |
* v(1:i-1) = 0 and v(i) = 1; conjg(v(i+1:n)) is stored on exit in |