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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
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- SUBROUTINE SORGTR( UPLO, N, A, LDA, TAU, WORK, LWORK, INFO )
-*
-* -- LAPACK 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 ..
- CHARACTER UPLO
- INTEGER INFO, LDA, LWORK, N
-* ..
-* .. Array Arguments ..
- REAL A( LDA, * ), TAU( * ), WORK( * )
-* ..
-*
+*> \brief \b SORGTR
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+* Definition
+* ==========
+*
+* SUBROUTINE SORGTR( UPLO, N, A, LDA, TAU, WORK, LWORK, INFO )
+*
+* .. Scalar Arguments ..
+* CHARACTER UPLO
+* INTEGER INFO, LDA, LWORK, N
+* ..
+* .. Array Arguments ..
+* REAL A( LDA, * ), TAU( * ), WORK( * )
+* ..
+*
* Purpose
* =======
*
-* SORGTR generates a real orthogonal matrix Q which is defined as the
-* product of n-1 elementary reflectors of order N, as returned by
-* SSYTRD:
-*
-* if UPLO = 'U', Q = H(n-1) . . . H(2) H(1),
-*
-* if UPLO = 'L', Q = H(1) H(2) . . . H(n-1).
+*>\details \b Purpose:
+*>\verbatim
+*>
+*> SORGTR generates a real orthogonal matrix Q which is defined as the
+*> product of n-1 elementary reflectors of order N, as returned by
+*> SSYTRD:
+*>
+*> if UPLO = 'U', Q = H(n-1) . . . H(2) H(1),
+*>
+*> if UPLO = 'L', Q = H(1) H(2) . . . H(n-1).
+*>
+*>\endverbatim
*
* Arguments
* =========
*
-* UPLO (input) CHARACTER*1
-* = 'U': Upper triangle of A contains elementary reflectors
-* from SSYTRD;
-* = 'L': Lower triangle of A contains elementary reflectors
-* from SSYTRD.
-*
-* N (input) INTEGER
-* The order of the matrix Q. N >= 0.
-*
-* A (input/output) REAL array, dimension (LDA,N)
-* On entry, the vectors which define the elementary reflectors,
-* as returned by SSYTRD.
-* On exit, the N-by-N orthogonal matrix Q.
+*> \param[in] UPLO
+*> \verbatim
+*> UPLO is CHARACTER*1
+*> = 'U': Upper triangle of A contains elementary reflectors
+*> from SSYTRD;
+*> = 'L': Lower triangle of A contains elementary reflectors
+*> from SSYTRD.
+*> \endverbatim
+*>
+*> \param[in] N
+*> \verbatim
+*> N is INTEGER
+*> The order of the matrix Q. N >= 0.
+*> \endverbatim
+*>
+*> \param[in,out] A
+*> \verbatim
+*> A is REAL array, dimension (LDA,N)
+*> On entry, the vectors which define the elementary reflectors,
+*> as returned by SSYTRD.
+*> On exit, the N-by-N orthogonal matrix Q.
+*> \endverbatim
+*>
+*> \param[in] LDA
+*> \verbatim
+*> LDA is INTEGER
+*> The leading dimension of the array A. LDA >= max(1,N).
+*> \endverbatim
+*>
+*> \param[in] TAU
+*> \verbatim
+*> TAU is REAL array, dimension (N-1)
+*> TAU(i) must contain the scalar factor of the elementary
+*> reflector H(i), as returned by SSYTRD.
+*> \endverbatim
+*>
+*> \param[out] WORK
+*> \verbatim
+*> WORK is REAL array, dimension (MAX(1,LWORK))
+*> On exit, if INFO = 0, WORK(1) returns the optimal LWORK.
+*> \endverbatim
+*>
+*> \param[in] LWORK
+*> \verbatim
+*> LWORK is INTEGER
+*> The dimension of the array WORK. LWORK >= max(1,N-1).
+*> For optimum performance LWORK >= (N-1)*NB, where NB is
+*> the optimal blocksize.
+*> \endverbatim
+*> \verbatim
+*> If LWORK = -1, then a workspace query is assumed; the routine
+*> only calculates the optimal size of the WORK array, returns
+*> this value as the first entry of the WORK array, and no error
+*> message related to LWORK is issued by XERBLA.
+*> \endverbatim
+*>
+*> \param[out] INFO
+*> \verbatim
+*> INFO is INTEGER
+*> = 0: successful exit
+*> < 0: if INFO = -i, the i-th argument had an illegal value
+*> \endverbatim
+*>
+*
+* Authors
+* =======
*
-* LDA (input) INTEGER
-* The leading dimension of the array A. LDA >= max(1,N).
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
*
-* TAU (input) REAL array, dimension (N-1)
-* TAU(i) must contain the scalar factor of the elementary
-* reflector H(i), as returned by SSYTRD.
+*> \date November 2011
*
-* WORK (workspace/output) REAL array, dimension (MAX(1,LWORK))
-* On exit, if INFO = 0, WORK(1) returns the optimal LWORK.
+*> \ingroup realOTHERcomputational
*
-* LWORK (input) INTEGER
-* The dimension of the array WORK. LWORK >= max(1,N-1).
-* For optimum performance LWORK >= (N-1)*NB, where NB is
-* the optimal blocksize.
+* =====================================================================
+ SUBROUTINE SORGTR( UPLO, N, A, LDA, TAU, WORK, LWORK, INFO )
*
-* If LWORK = -1, then a workspace query is assumed; the routine
-* only calculates the optimal size of the WORK array, returns
-* this value as the first entry of the WORK array, and no error
-* message related to LWORK is issued by XERBLA.
+* -- LAPACK computational 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
*
-* INFO (output) INTEGER
-* = 0: successful exit
-* < 0: if INFO = -i, the i-th argument had an illegal value
+* .. Scalar Arguments ..
+ CHARACTER UPLO
+ INTEGER INFO, LDA, LWORK, N
+* ..
+* .. Array Arguments ..
+ REAL A( LDA, * ), TAU( * ), WORK( * )
+* ..
*
* =====================================================================
*