version 1.1.1.1, 2010/01/26 15:22:45
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version 1.5, 2010/08/07 13:18:07
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SUBROUTINE DLAQPS( M, N, OFFSET, NB, KB, A, LDA, JPVT, TAU, VN1, |
SUBROUTINE DLAQPS( M, N, OFFSET, NB, KB, A, LDA, JPVT, TAU, VN1, |
$ VN2, AUXV, F, LDF ) |
$ VN2, AUXV, F, LDF ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.2) -- |
* -- LAPACK auxiliary 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 KB, LDA, LDF, M, N, NB, OFFSET |
INTEGER KB, LDA, LDF, M, N, NB, OFFSET |
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* Partial column norm updating strategy modified by |
* Partial column norm updating strategy modified by |
* Z. Drmac and Z. Bujanovic, Dept. of Mathematics, |
* Z. Drmac and Z. Bujanovic, Dept. of Mathematics, |
* University of Zagreb, Croatia. |
* University of Zagreb, Croatia. |
* June 2006. |
* June 2010 |
* For more details see LAPACK Working Note 176. |
* For more details see LAPACK Working Note 176. |
* ===================================================================== |
* ===================================================================== |
* |
* |
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DOUBLE PRECISION AKK, TEMP, TEMP2, TOL3Z |
DOUBLE PRECISION AKK, TEMP, TEMP2, TOL3Z |
* .. |
* .. |
* .. External Subroutines .. |
* .. External Subroutines .. |
EXTERNAL DGEMM, DGEMV, DLARFP, DSWAP |
EXTERNAL DGEMM, DGEMV, DLARFG, DSWAP |
* .. |
* .. |
* .. Intrinsic Functions .. |
* .. Intrinsic Functions .. |
INTRINSIC ABS, DBLE, MAX, MIN, NINT, SQRT |
INTRINSIC ABS, DBLE, MAX, MIN, NINT, SQRT |
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* Generate elementary reflector H(k). |
* Generate elementary reflector H(k). |
* |
* |
IF( RK.LT.M ) THEN |
IF( RK.LT.M ) THEN |
CALL DLARFP( M-RK+1, A( RK, K ), A( RK+1, K ), 1, TAU( K ) ) |
CALL DLARFG( M-RK+1, A( RK, K ), A( RK+1, K ), 1, TAU( K ) ) |
ELSE |
ELSE |
CALL DLARFP( 1, A( RK, K ), A( RK, K ), 1, TAU( K ) ) |
CALL DLARFG( 1, A( RK, K ), A( RK, K ), 1, TAU( K ) ) |
END IF |
END IF |
* |
* |
AKK = A( RK, K ) |
AKK = A( RK, K ) |