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author | julie <julielangou@users.noreply.github.com> | 2011-10-06 06:53:11 +0000 |
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committer | julie <julielangou@users.noreply.github.com> | 2011-10-06 06:53:11 +0000 |
commit | e1d39294aee16fa6db9ba079b14442358217db71 (patch) | |
tree | 30e5aa04c1f6596991fda5334f63dfb9b8027849 /SRC/clacn2.f | |
parent | 5fe0466a14e395641f4f8a300ecc9dcb8058081b (diff) | |
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Integrating Doxygen in comments
Diffstat (limited to 'SRC/clacn2.f')
-rw-r--r-- | SRC/clacn2.f | 179 |
1 files changed, 122 insertions, 57 deletions
diff --git a/SRC/clacn2.f b/SRC/clacn2.f index 5b76cde4..ed2ca131 100644 --- a/SRC/clacn2.f +++ b/SRC/clacn2.f @@ -1,75 +1,140 @@ - SUBROUTINE CLACN2( N, V, X, EST, KASE, ISAVE ) -* -* -- 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 2006 -* -* .. Scalar Arguments .. - INTEGER KASE, N - REAL EST -* .. -* .. Array Arguments .. - INTEGER ISAVE( 3 ) - COMPLEX V( * ), X( * ) -* .. -* +*> \brief \b CLACN2 +* +* =========== DOCUMENTATION =========== +* +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ +* +* Definition +* ========== +* +* SUBROUTINE CLACN2( N, V, X, EST, KASE, ISAVE ) +* +* .. Scalar Arguments .. +* INTEGER KASE, N +* REAL EST +* .. +* .. Array Arguments .. +* INTEGER ISAVE( 3 ) +* COMPLEX V( * ), X( * ) +* .. +* * Purpose * ======= * -* CLACN2 estimates the 1-norm of a square, complex matrix A. -* Reverse communication is used for evaluating matrix-vector products. +*>\details \b Purpose: +*>\verbatim +*> +*> CLACN2 estimates the 1-norm of a square, complex matrix A. +*> Reverse communication is used for evaluating matrix-vector products. +*> +*>\endverbatim * * Arguments * ========= * -* N (input) INTEGER -* The order of the matrix. N >= 1. -* -* V (workspace) COMPLEX array, dimension (N) -* On the final return, V = A*W, where EST = norm(V)/norm(W) -* (W is not returned). +*> \param[in] N +*> \verbatim +*> N is INTEGER +*> The order of the matrix. N >= 1. +*> \endverbatim +*> +*> \param[out] V +*> \verbatim +*> V is COMPLEX array, dimension (N) +*> On the final return, V = A*W, where EST = norm(V)/norm(W) +*> (W is not returned). +*> \endverbatim +*> +*> \param[in,out] X +*> \verbatim +*> X is COMPLEX array, dimension (N) +*> On an intermediate return, X should be overwritten by +*> A * X, if KASE=1, +*> A**H * X, if KASE=2, +*> where A**H is the conjugate transpose of A, and CLACN2 must be +*> re-called with all the other parameters unchanged. +*> \endverbatim +*> +*> \param[in,out] EST +*> \verbatim +*> EST is REAL +*> On entry with KASE = 1 or 2 and ISAVE(1) = 3, EST should be +*> unchanged from the previous call to CLACN2. +*> On exit, EST is an estimate (a lower bound) for norm(A). +*> \endverbatim +*> +*> \param[in,out] KASE +*> \verbatim +*> KASE is INTEGER +*> On the initial call to CLACN2, KASE should be 0. +*> On an intermediate return, KASE will be 1 or 2, indicating +*> whether X should be overwritten by A * X or A**H * X. +*> On the final return from CLACN2, KASE will again be 0. +*> \endverbatim +*> +*> \param[in,out] ISAVE +*> \verbatim +*> ISAVE is INTEGER array, dimension (3) +*> ISAVE is used to save variables between calls to SLACN2 +*> \endverbatim +*> +* +* Authors +* ======= * -* X (input/output) COMPLEX array, dimension (N) -* On an intermediate return, X should be overwritten by -* A * X, if KASE=1, -* A**H * X, if KASE=2, -* where A**H is the conjugate transpose of A, and CLACN2 must be -* re-called with all the other parameters unchanged. +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. * -* EST (input/output) REAL -* On entry with KASE = 1 or 2 and ISAVE(1) = 3, EST should be -* unchanged from the previous call to CLACN2. -* On exit, EST is an estimate (a lower bound) for norm(A). +*> \date November 2011 * -* KASE (input/output) INTEGER -* On the initial call to CLACN2, KASE should be 0. -* On an intermediate return, KASE will be 1 or 2, indicating -* whether X should be overwritten by A * X or A**H * X. -* On the final return from CLACN2, KASE will again be 0. +*> \ingroup complexOTHERauxiliary * -* ISAVE (input/output) INTEGER array, dimension (3) -* ISAVE is used to save variables between calls to SLACN2 * * Further Details -* ======= ======= -* -* Contributed by Nick Higham, University of Manchester. -* Originally named CONEST, dated March 16, 1988. -* -* Reference: N.J. Higham, "FORTRAN codes for estimating the one-norm of -* a real or complex matrix, with applications to condition estimation", -* ACM Trans. Math. Soft., vol. 14, no. 4, pp. 381-396, December 1988. -* -* Last modified: April, 1999 +* =============== +*>\details \b Further \b Details +*> \verbatim +* Further Details +*> ======= ======= +*> +*> Contributed by Nick Higham, University of Manchester. +*> Originally named CONEST, dated March 16, 1988. +*> +*> Reference: N.J. Higham, "FORTRAN codes for estimating the one-norm of +*> a real or complex matrix, with applications to condition estimation", +*> ACM Trans. Math. Soft., vol. 14, no. 4, pp. 381-396, December 1988. +*> +*> Last modified: April, 1999 +*> +*> This is a thread safe version of CLACON, which uses the array ISAVE +*> in place of a SAVE statement, as follows: +*> +*> CLACON CLACN2 +*> JUMP ISAVE(1) +*> J ISAVE(2) +*> ITER ISAVE(3) +*> +*> \endverbatim +*> +* ===================================================================== + SUBROUTINE CLACN2( N, V, X, EST, KASE, ISAVE ) * -* This is a thread safe version of CLACON, which uses the array ISAVE -* in place of a SAVE statement, as follows: +* -- 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 * -* CLACON CLACN2 -* JUMP ISAVE(1) -* J ISAVE(2) -* ITER ISAVE(3) +* .. Scalar Arguments .. + INTEGER KASE, N + REAL EST +* .. +* .. Array Arguments .. + INTEGER ISAVE( 3 ) + COMPLEX V( * ), X( * ) +* .. * * ===================================================================== * |