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author | igor175 <igor175@8a072113-8704-0410-8d35-dd094bca7971> | 2012-10-25 21:48:07 +0000 |
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committer | igor175 <igor175@8a072113-8704-0410-8d35-dd094bca7971> | 2012-10-25 21:48:07 +0000 |
commit | df210ad64f82dcbca68f6b916fcc94ba060bcf9b (patch) | |
tree | ad16264febb29cc072ce8472e31302cab7d8100e /SRC/slasyf.f | |
parent | 04af8255ecace3e1a346cc2ae2157bb2935e80d4 (diff) | |
download | lapack-df210ad64f82dcbca68f6b916fcc94ba060bcf9b.tar.gz lapack-df210ad64f82dcbca68f6b916fcc94ba060bcf9b.tar.bz2 lapack-df210ad64f82dcbca68f6b916fcc94ba060bcf9b.zip |
fixes to documentation in *lasyf.f, *lasyf_rook.f
Diffstat (limited to 'SRC/slasyf.f')
-rw-r--r-- | SRC/slasyf.f | 60 |
1 files changed, 35 insertions, 25 deletions
diff --git a/SRC/slasyf.f b/SRC/slasyf.f index 20c8ffae..f25a1f37 100644 --- a/SRC/slasyf.f +++ b/SRC/slasyf.f @@ -1,25 +1,25 @@ -*> \brief \b SLASYF computes a partial factorization of a real symmetric matrix, using the diagonal pivoting method. +*> \brief \b SLASYF computes a partial factorization of a real symmetric matrix using the Bunch-Kaufman diagonal pivoting method. * * =========== DOCUMENTATION =========== * -* Online html documentation available at -* http://www.netlib.org/lapack/explore-html/ +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ * *> \htmlonly -*> Download SLASYF + dependencies -*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/slasyf.f"> -*> [TGZ]</a> -*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/slasyf.f"> -*> [ZIP]</a> -*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/slasyf.f"> +*> Download SLASYF + dependencies +*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/slasyf.f"> +*> [TGZ]</a> +*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/slasyf.f"> +*> [ZIP]</a> +*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/slasyf.f"> *> [TXT]</a> -*> \endhtmlonly +*> \endhtmlonly * * Definition: * =========== * * SUBROUTINE SLASYF( UPLO, N, NB, KB, A, LDA, IPIV, W, LDW, INFO ) -* +* * .. Scalar Arguments .. * CHARACTER UPLO * INTEGER INFO, KB, LDA, LDW, N, NB @@ -28,7 +28,7 @@ * INTEGER IPIV( * ) * REAL A( LDA, * ), W( LDW, * ) * .. -* +* * *> \par Purpose: * ============= @@ -109,16 +109,26 @@ *> \verbatim *> IPIV is INTEGER array, dimension (N) *> Details of the interchanges and the block structure of D. -*> If UPLO = 'U', only the last KB elements of IPIV are set; -*> if UPLO = 'L', only the first KB elements are set. *> -*> If IPIV(k) > 0, then rows and columns k and IPIV(k) were -*> interchanged and D(k,k) is a 1-by-1 diagonal block. -*> If UPLO = 'U' and IPIV(k) = IPIV(k-1) < 0, then rows and -*> columns k-1 and -IPIV(k) were interchanged and D(k-1:k,k-1:k) -*> is a 2-by-2 diagonal block. If UPLO = 'L' and IPIV(k) = -*> IPIV(k+1) < 0, then rows and columns k+1 and -IPIV(k) were -*> interchanged and D(k:k+1,k:k+1) is a 2-by-2 diagonal block. +*> If UPLO = 'U': +*> Only the last KB elements of IPIV are set. +*> +*> If IPIV(k) > 0, then rows and columns k and IPIV(k) were +*> interchanged and D(k,k) is a 1-by-1 diagonal block. +*> +*> If IPIV(k) = IPIV(k-1) < 0, then rows and columns +*> k-1 and -IPIV(k) were interchanged and D(k-1:k,k-1:k) +*> is a 2-by-2 diagonal block. +*> +*> If UPLO = 'L': +*> Only the first KB elements of IPIV are set. +*> +*> If IPIV(k) > 0, then rows and columns k and IPIV(k) were +*> interchanged and D(k,k) is a 1-by-1 diagonal block. +*> +*> If IPIV(k) = IPIV(k+1) < 0, then rows and columns +*> k+1 and -IPIV(k) were interchanged and D(k:k+1,k:k+1) +*> is a 2-by-2 diagonal block. *> \endverbatim *> *> \param[out] W @@ -144,10 +154,10 @@ * Authors: * ======== * -*> \author Univ. of Tennessee -*> \author Univ. of California Berkeley -*> \author Univ. of Colorado Denver -*> \author NAG Ltd. +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. * *> \date September 2012 * |