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version 1.4, 2010/08/06 15:32:31
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version 1.5, 2010/08/07 13:18:07
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| SUBROUTINE DLATRZ( M, N, L, A, LDA, TAU, WORK ) |
SUBROUTINE DLATRZ( M, N, L, A, LDA, TAU, WORK ) |
| * |
* |
| * -- LAPACK routine (version 3.2) -- |
* -- LAPACK routine (version 3.2.2) -- |
| * -- 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 |
* June 2010 |
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| INTEGER L, LDA, M, N |
INTEGER L, LDA, M, N |
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| INTEGER I |
INTEGER I |
| * .. |
* .. |
| * .. External Subroutines .. |
* .. External Subroutines .. |
| EXTERNAL DLARFP, DLARZ |
EXTERNAL DLARFG, DLARZ |
| * .. |
* .. |
| * .. Executable Statements .. |
* .. Executable Statements .. |
| * |
* |
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| * Generate elementary reflector H(i) to annihilate |
* Generate elementary reflector H(i) to annihilate |
| * [ A(i,i) A(i,n-l+1:n) ] |
* [ A(i,i) A(i,n-l+1:n) ] |
| * |
* |
| CALL DLARFP( L+1, A( I, I ), A( I, N-L+1 ), LDA, TAU( I ) ) |
CALL DLARFG( L+1, A( I, I ), A( I, N-L+1 ), LDA, TAU( I ) ) |
| * |
* |
| * Apply H(i) to A(1:i-1,i:n) from the right |
* Apply H(i) to A(1:i-1,i:n) from the right |
| * |
* |
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