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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/dla_syrcond.f | |
parent | 5fe0466a14e395641f4f8a300ecc9dcb8058081b (diff) | |
download | lapack-e1d39294aee16fa6db9ba079b14442358217db71.tar.gz lapack-e1d39294aee16fa6db9ba079b14442358217db71.tar.bz2 lapack-e1d39294aee16fa6db9ba079b14442358217db71.zip |
Integrating Doxygen in comments
Diffstat (limited to 'SRC/dla_syrcond.f')
-rw-r--r-- | SRC/dla_syrcond.f | 207 |
1 files changed, 140 insertions, 67 deletions
diff --git a/SRC/dla_syrcond.f b/SRC/dla_syrcond.f index fd39a3c5..1055f41d 100644 --- a/SRC/dla_syrcond.f +++ b/SRC/dla_syrcond.f @@ -1,85 +1,158 @@ - DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, - $ IPIV, CMODE, C, INFO, WORK, - $ IWORK ) +*> \brief \b DLA_SYRCOND * -* -- LAPACK routine (version 3.2.1) -- -* -- Contributed by James Demmel, Deaglan Halligan, Yozo Hida and -- -* -- Jason Riedy of Univ. of California Berkeley. -- -* -- April 2009 -- +* =========== DOCUMENTATION =========== * -* -- LAPACK is a software package provided by Univ. of Tennessee, -- -* -- Univ. of California Berkeley and NAG Ltd. -- +* Online html documentation available at +* http://www.netlib.org/lapack/explore-html/ * - IMPLICIT NONE -* .. -* .. Scalar Arguments .. - CHARACTER UPLO - INTEGER N, LDA, LDAF, INFO, CMODE -* .. -* .. Array Arguments - INTEGER IWORK( * ), IPIV( * ) - DOUBLE PRECISION A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * ) -* .. +* Definition +* ========== * +* DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, +* IPIV, CMODE, C, INFO, WORK, +* IWORK ) +* +* .. Scalar Arguments .. +* CHARACTER UPLO +* INTEGER N, LDA, LDAF, INFO, CMODE +* .. +* .. Array Arguments +* INTEGER IWORK( * ), IPIV( * ) +* DOUBLE PRECISION A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * ) +* .. +* * Purpose * ======= * -* DLA_SYRCOND estimates the Skeel condition number of op(A) * op2(C) -* where op2 is determined by CMODE as follows -* CMODE = 1 op2(C) = C -* CMODE = 0 op2(C) = I -* CMODE = -1 op2(C) = inv(C) -* The Skeel condition number cond(A) = norminf( |inv(A)||A| ) -* is computed by computing scaling factors R such that -* diag(R)*A*op2(C) is row equilibrated and computing the standard -* infinity-norm condition number. +*>\details \b Purpose: +*>\verbatim +*> +*> DLA_SYRCOND estimates the Skeel condition number of op(A) * op2(C) +*> where op2 is determined by CMODE as follows +*> CMODE = 1 op2(C) = C +*> CMODE = 0 op2(C) = I +*> CMODE = -1 op2(C) = inv(C) +*> The Skeel condition number cond(A) = norminf( |inv(A)||A| ) +*> is computed by computing scaling factors R such that +*> diag(R)*A*op2(C) is row equilibrated and computing the standard +*> infinity-norm condition number. +*> +*>\endverbatim * * Arguments -* ========== -* -* UPLO (input) CHARACTER*1 -* = 'U': Upper triangle of A is stored; -* = 'L': Lower triangle of A is stored. -* -* N (input) INTEGER -* The number of linear equations, i.e., the order of the -* matrix A. N >= 0. -* -* A (input) DOUBLE PRECISION array, dimension (LDA,N) -* On entry, the N-by-N matrix A. -* -* LDA (input) INTEGER -* The leading dimension of the array A. LDA >= max(1,N). -* -* AF (input) DOUBLE PRECISION array, dimension (LDAF,N) -* The block diagonal matrix D and the multipliers used to -* obtain the factor U or L as computed by DSYTRF. -* -* LDAF (input) INTEGER -* The leading dimension of the array AF. LDAF >= max(1,N). +* ========= +* +*> \param[in] UPLO +*> \verbatim +*> UPLO is CHARACTER*1 +*> = 'U': Upper triangle of A is stored; +*> = 'L': Lower triangle of A is stored. +*> \endverbatim +*> +*> \param[in] N +*> \verbatim +*> N is INTEGER +*> The number of linear equations, i.e., the order of the +*> matrix A. N >= 0. +*> \endverbatim +*> +*> \param[in] A +*> \verbatim +*> A is DOUBLE PRECISION array, dimension (LDA,N) +*> On entry, the N-by-N matrix A. +*> \endverbatim +*> +*> \param[in] LDA +*> \verbatim +*> LDA is INTEGER +*> The leading dimension of the array A. LDA >= max(1,N). +*> \endverbatim +*> +*> \param[in] AF +*> \verbatim +*> AF is DOUBLE PRECISION array, dimension (LDAF,N) +*> The block diagonal matrix D and the multipliers used to +*> obtain the factor U or L as computed by DSYTRF. +*> \endverbatim +*> +*> \param[in] LDAF +*> \verbatim +*> LDAF is INTEGER +*> The leading dimension of the array AF. LDAF >= max(1,N). +*> \endverbatim +*> +*> \param[in] IPIV +*> \verbatim +*> IPIV is INTEGER array, dimension (N) +*> Details of the interchanges and the block structure of D +*> as determined by DSYTRF. +*> \endverbatim +*> +*> \param[in] CMODE +*> \verbatim +*> CMODE is INTEGER +*> Determines op2(C) in the formula op(A) * op2(C) as follows: +*> CMODE = 1 op2(C) = C +*> CMODE = 0 op2(C) = I +*> CMODE = -1 op2(C) = inv(C) +*> \endverbatim +*> +*> \param[in] C +*> \verbatim +*> C is DOUBLE PRECISION array, dimension (N) +*> The vector C in the formula op(A) * op2(C). +*> \endverbatim +*> +*> \param[out] INFO +*> \verbatim +*> INFO is INTEGER +*> = 0: Successful exit. +*> i > 0: The ith argument is invalid. +*> \endverbatim +*> +*> \param[in] WORK +*> \verbatim +*> WORK is DOUBLE PRECISION array, dimension (3*N). +*> Workspace. +*> \endverbatim +*> +*> \param[in] IWORK +*> \verbatim +*> IWORK is INTEGER array, dimension (N). +*> Workspace. +*> \endverbatim +*> +* +* Authors +* ======= * -* IPIV (input) INTEGER array, dimension (N) -* Details of the interchanges and the block structure of D -* as determined by DSYTRF. +*> \author Univ. of Tennessee +*> \author Univ. of California Berkeley +*> \author Univ. of Colorado Denver +*> \author NAG Ltd. * -* CMODE (input) INTEGER -* Determines op2(C) in the formula op(A) * op2(C) as follows: -* CMODE = 1 op2(C) = C -* CMODE = 0 op2(C) = I -* CMODE = -1 op2(C) = inv(C) +*> \date November 2011 * -* C (input) DOUBLE PRECISION array, dimension (N) -* The vector C in the formula op(A) * op2(C). +*> \ingroup doubleSYcomputational * -* INFO (output) INTEGER -* = 0: Successful exit. -* i > 0: The ith argument is invalid. +* ===================================================================== + DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, + $ IPIV, CMODE, C, INFO, WORK, + $ IWORK ) * -* WORK (input) DOUBLE PRECISION array, dimension (3*N). -* Workspace. +* -- LAPACK computational routine (version 3.2.1) -- +* -- LAPACK is a software package provided by Univ. of Tennessee, -- +* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- +* November 2011 * -* IWORK (input) INTEGER array, dimension (N). -* Workspace. +* .. Scalar Arguments .. + CHARACTER UPLO + INTEGER N, LDA, LDAF, INFO, CMODE +* .. +* .. Array Arguments + INTEGER IWORK( * ), IPIV( * ) + DOUBLE PRECISION A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * ) +* .. * * ===================================================================== * |