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Diff for /rpl/lapack/lapack/iladlr.f between versions 1.8 and 1.21

-version 1.8, 2010/12/21 13:53:41
+version 1.21, 2023/08/07 08:39:14
  Line 1
-       INTEGER FUNCTION ILADLR( M, N, A, LDA )
+ *> \brief \b ILADLR scans a matrix for its last non-zero row.
-       IMPLICIT NONE
+ *
+ *  =========== DOCUMENTATION ===========
  *
- *  -- LAPACK auxiliary routine (version 3.2.2)                        --
+ * Online html documentation available at
+ *            http://www.netlib.org/lapack/explore-html/
  *
- *  -- June 2010                                                       --
+ *> \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.
  *
+ *> \ingroup OTHERauxiliary
+ *
+ *  =====================================================================
+       INTEGER FUNCTION ILADLR( M, N, A, LDA )
+ *
+ *  -- LAPACK auxiliary routine --
  *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
  *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
  *
- Line 15
+ Line 87
        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 ..
- Line 55
+ Line 107
  *     Scan up each column tracking the last zero row seen.
           ILADLR = 0
           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 )
           END DO
        END IF

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