summaryrefslogtreecommitdiff
path: root/SRC/claqr1.f
diff options
context:
space:
mode:
authorjulie <julielangou@users.noreply.github.com>2011-10-06 06:53:11 +0000
committerjulie <julielangou@users.noreply.github.com>2011-10-06 06:53:11 +0000
commite1d39294aee16fa6db9ba079b14442358217db71 (patch)
tree30e5aa04c1f6596991fda5334f63dfb9b8027849 /SRC/claqr1.f
parent5fe0466a14e395641f4f8a300ecc9dcb8058081b (diff)
downloadlapack-e1d39294aee16fa6db9ba079b14442358217db71.tar.gz
lapack-e1d39294aee16fa6db9ba079b14442358217db71.tar.bz2
lapack-e1d39294aee16fa6db9ba079b14442358217db71.zip
Integrating Doxygen in comments
Diffstat (limited to 'SRC/claqr1.f')
-rw-r--r--SRC/claqr1.f139
1 files changed, 100 insertions, 39 deletions
diff --git a/SRC/claqr1.f b/SRC/claqr1.f
index a9224b78..dab88ddb 100644
--- a/SRC/claqr1.f
+++ b/SRC/claqr1.f
@@ -1,57 +1,118 @@
- SUBROUTINE CLAQR1( N, H, LDH, S1, S2, V )
-*
-* -- LAPACK auxiliary routine (version 3.2) --
-* Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..
-* November 2006
-*
-* .. Scalar Arguments ..
- COMPLEX S1, S2
- INTEGER LDH, N
-* ..
-* .. Array Arguments ..
- COMPLEX H( LDH, * ), V( * )
-* ..
-*
+*> \brief \b CLAQR1
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+* Definition
+* ==========
+*
+* SUBROUTINE CLAQR1( N, H, LDH, S1, S2, V )
+*
+* .. Scalar Arguments ..
+* COMPLEX S1, S2
+* INTEGER LDH, N
+* ..
+* .. Array Arguments ..
+* COMPLEX H( LDH, * ), V( * )
+* ..
+*
* Purpose
* =======
*
-* Given a 2-by-2 or 3-by-3 matrix H, CLAQR1 sets v to a
-* scalar multiple of the first column of the product
-*
-* (*) K = (H - s1*I)*(H - s2*I)
-*
-* scaling to avoid overflows and most underflows.
-*
-* This is useful for starting double implicit shift bulges
-* in the QR algorithm.
+*>\details \b Purpose:
+*>\verbatim
+*>
+*> Given a 2-by-2 or 3-by-3 matrix H, CLAQR1 sets v to a
+*> scalar multiple of the first column of the product
+*>
+*> (*) K = (H - s1*I)*(H - s2*I)
+*>
+*> scaling to avoid overflows and most underflows.
+*>
+*> This is useful for starting double implicit shift bulges
+*> in the QR algorithm.
+*>
+*>\endverbatim
*
* Arguments
* =========
*
-* N (input) integer
-* Order of the matrix H. N must be either 2 or 3.
-*
-* H (input) COMPLEX array of dimension (LDH,N)
-* The 2-by-2 or 3-by-3 matrix H in (*).
+*> \param[in] N
+*> \verbatim
+*> N is integer
+*> Order of the matrix H. N must be either 2 or 3.
+*> \endverbatim
+*>
+*> \param[in] H
+*> \verbatim
+*> H is COMPLEX array of dimension (LDH,N)
+*> The 2-by-2 or 3-by-3 matrix H in (*).
+*> \endverbatim
+*>
+*> \param[in] LDH
+*> \verbatim
+*> LDH is integer
+*> The leading dimension of H as declared in
+*> the calling procedure. LDH.GE.N
+*> \endverbatim
+*>
+*> \param[in] S1
+*> \verbatim
+*> S1 is COMPLEX
+*> \endverbatim
+*> \verbatim
+*> S2 S1 and S2 are the shifts defining K in (*) above.
+*> \endverbatim
+*>
+*> \param[out] V
+*> \verbatim
+*> V is COMPLEX array of dimension N
+*> A scalar multiple of the first column of the
+*> matrix K in (*).
+*> \endverbatim
+*>
+*
+* Authors
+* =======
*
-* LDH (input) integer
-* The leading dimension of H as declared in
-* the calling procedure. LDH.GE.N
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
*
-* S1 (input) COMPLEX
+*> \date November 2011
*
-* S2 S1 and S2 are the shifts defining K in (*) above.
+*> \ingroup complexOTHERauxiliary
*
-* V (output) COMPLEX array of dimension N
-* A scalar multiple of the first column of the
-* matrix K in (*).
*
* Further Details
* ===============
+*>\details \b Further \b Details
+*> \verbatim
+*>
+*> Based on contributions by
+*> Karen Braman and Ralph Byers, Department of Mathematics,
+*> University of Kansas, USA
+*>
+*> \endverbatim
+*>
+* =====================================================================
+ SUBROUTINE CLAQR1( N, H, LDH, S1, S2, V )
*
-* Based on contributions by
-* Karen Braman and Ralph Byers, Department of Mathematics,
-* University of Kansas, USA
+* -- LAPACK auxiliary routine (version 3.2) --
+* -- LAPACK is a software package provided by Univ. of Tennessee, --
+* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+* November 2011
+*
+* .. Scalar Arguments ..
+ COMPLEX S1, S2
+ INTEGER LDH, N
+* ..
+* .. Array Arguments ..
+ COMPLEX H( LDH, * ), V( * )
+* ..
*
* ================================================================
*