version 1.6, 2010/08/07 13:22:29
|
version 1.12, 2012/07/31 11:06:37
|
Line 1
|
Line 1
|
INTEGER FUNCTION ILADLR( M, N, A, LDA ) |
*> \brief \b ILADLR |
IMPLICIT NONE |
* |
|
* =========== DOCUMENTATION =========== |
|
* |
|
* Online html documentation available at |
|
* http://www.netlib.org/lapack/explore-html/ |
|
* |
|
*> \htmlonly |
|
*> Download ILADLR + dependencies |
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/iladlr.f"> |
|
*> [TGZ]</a> |
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/iladlr.f"> |
|
*> [ZIP]</a> |
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/iladlr.f"> |
|
*> [TXT]</a> |
|
*> \endhtmlonly |
|
* |
|
* Definition: |
|
* =========== |
|
* |
|
* INTEGER FUNCTION ILADLR( M, N, A, LDA ) |
|
* |
|
* .. Scalar Arguments .. |
|
* INTEGER M, N, LDA |
|
* .. |
|
* .. Array Arguments .. |
|
* DOUBLE PRECISION A( LDA, * ) |
|
* .. |
|
* |
|
* |
|
*> \par Purpose: |
|
* ============= |
|
*> |
|
*> \verbatim |
|
*> |
|
*> ILADLR scans A for its last non-zero row. |
|
*> \endverbatim |
|
* |
|
* Arguments: |
|
* ========== |
|
* |
|
*> \param[in] M |
|
*> \verbatim |
|
*> M is INTEGER |
|
*> The number of rows of the matrix A. |
|
*> \endverbatim |
|
*> |
|
*> \param[in] N |
|
*> \verbatim |
|
*> N is INTEGER |
|
*> The number of columns of the matrix A. |
|
*> \endverbatim |
|
*> |
|
*> \param[in] A |
|
*> \verbatim |
|
*> A is DOUBLE PRECISION array, dimension (LDA,N) |
|
*> The m by n matrix A. |
|
*> \endverbatim |
|
*> |
|
*> \param[in] LDA |
|
*> \verbatim |
|
*> LDA is INTEGER |
|
*> The leading dimension of the array A. LDA >= max(1,M). |
|
*> \endverbatim |
|
* |
|
* Authors: |
|
* ======== |
|
* |
|
*> \author Univ. of Tennessee |
|
*> \author Univ. of California Berkeley |
|
*> \author Univ. of Colorado Denver |
|
*> \author NAG Ltd. |
* |
* |
* -- LAPACK auxiliary routine (version 3.2.2) -- |
*> \date April 2012 |
* |
* |
* -- June 2010 -- |
*> \ingroup auxOTHERauxiliary |
|
* |
|
* ===================================================================== |
|
INTEGER FUNCTION ILADLR( M, N, A, LDA ) |
* |
* |
|
* -- LAPACK auxiliary routine (version 3.4.1) -- |
* -- 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..-- |
|
* April 2012 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER M, N, LDA |
INTEGER M, N, LDA |
Line 15
|
Line 90
|
DOUBLE PRECISION A( LDA, * ) |
DOUBLE PRECISION A( LDA, * ) |
* .. |
* .. |
* |
* |
* Purpose |
|
* ======= |
|
* |
|
* ILADLR scans A for its last non-zero row. |
|
* |
|
* Arguments |
|
* ========= |
|
* |
|
* M (input) INTEGER |
|
* The number of rows of the matrix A. |
|
* |
|
* N (input) INTEGER |
|
* The number of columns of the matrix A. |
|
* |
|
* A (input) DOUBLE PRECISION array, dimension (LDA,N) |
|
* The m by n matrix A. |
|
* |
|
* LDA (input) INTEGER |
|
* The leading dimension of the array A. LDA >= max(1,M). |
|
* |
|
* ===================================================================== |
* ===================================================================== |
* |
* |
* .. Parameters .. |
* .. Parameters .. |
Line 55
|
Line 110
|
* Scan up each column tracking the last zero row seen. |
* Scan up each column tracking the last zero row seen. |
ILADLR = 0 |
ILADLR = 0 |
DO J = 1, N |
DO J = 1, N |
DO I = M, 1, -1 |
I=M |
IF( A(I, J).NE.ZERO ) EXIT |
DO WHILE((A(MAX(I,1),J).EQ.ZERO).AND.(I.GE.1)) |
END DO |
I=I-1 |
|
ENDDO |
ILADLR = MAX( ILADLR, I ) |
ILADLR = MAX( ILADLR, I ) |
END DO |
END DO |
END IF |
END IF |