--- rpl/lapack/lapack/ilazlr.f 2011/07/22 07:38:13 1.9
+++ rpl/lapack/lapack/ilazlr.f 2014/01/27 09:28:30 1.16
@@ -1,10 +1,88 @@
+*> \brief \b ILAZLR scans a matrix for its last non-zero row.
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+*> \htmlonly
+*> Download ILAZLR + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
+*> [TXT]
+*> \endhtmlonly
+*
+* Definition:
+* ===========
+*
+* INTEGER FUNCTION ILAZLR( M, N, A, LDA )
+*
+* .. Scalar Arguments ..
+* INTEGER M, N, LDA
+* ..
+* .. Array Arguments ..
+* COMPLEX*16 A( LDA, * )
+* ..
+*
+*
+*> \par Purpose:
+* =============
+*>
+*> \verbatim
+*>
+*> ILAZLR 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 COMPLEX*16 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.
+*
+*> \date September 2012
+*
+*> \ingroup complex16OTHERauxiliary
+*
+* =====================================================================
INTEGER FUNCTION ILAZLR( M, N, A, LDA )
- IMPLICIT NONE
*
-* -- LAPACK auxiliary routine (version 3.3.1) --
+* -- LAPACK auxiliary routine (version 3.4.2) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* -- April 2011 --
+* September 2012
+*
* .. Scalar Arguments ..
INTEGER M, N, LDA
* ..
@@ -12,26 +90,6 @@
COMPLEX*16 A( LDA, * )
* ..
*
-* Purpose
-* =======
-*
-* ILAZLR 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) COMPLEX*16 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 ..
@@ -53,9 +111,9 @@
ILAZLR = 0
DO J = 1, N
I=M
- DO WHILE ((A(I,J).NE.ZERO).AND.(I.GE.1))
- I=I-1
- ENDDO
+ DO WHILE((A(MAX(I,1),J).EQ.ZERO).AND.(I.GE.1))
+ I=I-1
+ ENDDO
ILAZLR = MAX( ILAZLR, I )
END DO
END IF