--- rpl/lapack/lapack/dlarf.f 2010/08/07 13:22:19 1.5
+++ rpl/lapack/lapack/dlarf.f 2011/11/21 22:19:33 1.10
@@ -1,10 +1,133 @@
+*> \brief \b DLARF
+*
+* =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
+*
+*> \htmlonly
+*> Download DLARF + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
+*> [TXT]
+*> \endhtmlonly
+*
+* Definition:
+* ===========
+*
+* SUBROUTINE DLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
+*
+* .. Scalar Arguments ..
+* CHARACTER SIDE
+* INTEGER INCV, LDC, M, N
+* DOUBLE PRECISION TAU
+* ..
+* .. Array Arguments ..
+* DOUBLE PRECISION C( LDC, * ), V( * ), WORK( * )
+* ..
+*
+*
+*> \par Purpose:
+* =============
+*>
+*> \verbatim
+*>
+*> DLARF applies a real elementary reflector H to a real m by n matrix
+*> C, from either the left or the right. H is represented in the form
+*>
+*> H = I - tau * v * v**T
+*>
+*> where tau is a real scalar and v is a real vector.
+*>
+*> If tau = 0, then H is taken to be the unit matrix.
+*> \endverbatim
+*
+* Arguments:
+* ==========
+*
+*> \param[in] SIDE
+*> \verbatim
+*> SIDE is CHARACTER*1
+*> = 'L': form H * C
+*> = 'R': form C * H
+*> \endverbatim
+*>
+*> \param[in] M
+*> \verbatim
+*> M is INTEGER
+*> The number of rows of the matrix C.
+*> \endverbatim
+*>
+*> \param[in] N
+*> \verbatim
+*> N is INTEGER
+*> The number of columns of the matrix C.
+*> \endverbatim
+*>
+*> \param[in] V
+*> \verbatim
+*> V is DOUBLE PRECISION array, dimension
+*> (1 + (M-1)*abs(INCV)) if SIDE = 'L'
+*> or (1 + (N-1)*abs(INCV)) if SIDE = 'R'
+*> The vector v in the representation of H. V is not used if
+*> TAU = 0.
+*> \endverbatim
+*>
+*> \param[in] INCV
+*> \verbatim
+*> INCV is INTEGER
+*> The increment between elements of v. INCV <> 0.
+*> \endverbatim
+*>
+*> \param[in] TAU
+*> \verbatim
+*> TAU is DOUBLE PRECISION
+*> The value tau in the representation of H.
+*> \endverbatim
+*>
+*> \param[in,out] C
+*> \verbatim
+*> C is DOUBLE PRECISION array, dimension (LDC,N)
+*> On entry, the m by n matrix C.
+*> On exit, C is overwritten by the matrix H * C if SIDE = 'L',
+*> or C * H if SIDE = 'R'.
+*> \endverbatim
+*>
+*> \param[in] LDC
+*> \verbatim
+*> LDC is INTEGER
+*> The leading dimension of the array C. LDC >= max(1,M).
+*> \endverbatim
+*>
+*> \param[out] WORK
+*> \verbatim
+*> WORK is DOUBLE PRECISION array, dimension
+*> (N) if SIDE = 'L'
+*> or (M) if SIDE = 'R'
+*> \endverbatim
+*
+* Authors:
+* ========
+*
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
+*
+*> \date November 2011
+*
+*> \ingroup doubleOTHERauxiliary
+*
+* =====================================================================
SUBROUTINE DLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
- IMPLICIT NONE
*
-* -- LAPACK auxiliary routine (version 3.2) --
+* -- LAPACK auxiliary routine (version 3.4.0) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* November 2006
+* November 2011
*
* .. Scalar Arguments ..
CHARACTER SIDE
@@ -15,55 +138,6 @@
DOUBLE PRECISION C( LDC, * ), V( * ), WORK( * )
* ..
*
-* Purpose
-* =======
-*
-* DLARF applies a real elementary reflector H to a real m by n matrix
-* C, from either the left or the right. H is represented in the form
-*
-* H = I - tau * v * v'
-*
-* where tau is a real scalar and v is a real vector.
-*
-* If tau = 0, then H is taken to be the unit matrix.
-*
-* Arguments
-* =========
-*
-* SIDE (input) CHARACTER*1
-* = 'L': form H * C
-* = 'R': form C * H
-*
-* M (input) INTEGER
-* The number of rows of the matrix C.
-*
-* N (input) INTEGER
-* The number of columns of the matrix C.
-*
-* V (input) DOUBLE PRECISION array, dimension
-* (1 + (M-1)*abs(INCV)) if SIDE = 'L'
-* or (1 + (N-1)*abs(INCV)) if SIDE = 'R'
-* The vector v in the representation of H. V is not used if
-* TAU = 0.
-*
-* INCV (input) INTEGER
-* The increment between elements of v. INCV <> 0.
-*
-* TAU (input) DOUBLE PRECISION
-* The value tau in the representation of H.
-*
-* C (input/output) DOUBLE PRECISION array, dimension (LDC,N)
-* On entry, the m by n matrix C.
-* On exit, C is overwritten by the matrix H * C if SIDE = 'L',
-* or C * H if SIDE = 'R'.
-*
-* LDC (input) INTEGER
-* The leading dimension of the array C. LDC >= max(1,M).
-*
-* WORK (workspace) DOUBLE PRECISION array, dimension
-* (N) if SIDE = 'L'
-* or (M) if SIDE = 'R'
-*
* =====================================================================
*
* .. Parameters ..
@@ -121,12 +195,12 @@
*
IF( LASTV.GT.0 ) THEN
*
-* w(1:lastc,1) := C(1:lastv,1:lastc)' * v(1:lastv,1)
+* w(1:lastc,1) := C(1:lastv,1:lastc)**T * v(1:lastv,1)
*
CALL DGEMV( 'Transpose', LASTV, LASTC, ONE, C, LDC, V, INCV,
$ ZERO, WORK, 1 )
*
-* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)'
+* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)**T
*
CALL DGER( LASTV, LASTC, -TAU, V, INCV, WORK, 1, C, LDC )
END IF
@@ -141,7 +215,7 @@
CALL DGEMV( 'No transpose', LASTC, LASTV, ONE, C, LDC,
$ V, INCV, ZERO, WORK, 1 )
*
-* C(1:lastc,1:lastv) := C(...) - w(1:lastc,1) * v(1:lastv,1)'
+* C(1:lastc,1:lastv) := C(...) - w(1:lastc,1) * v(1:lastv,1)**T
*
CALL DGER( LASTC, LASTV, -TAU, WORK, 1, V, INCV, C, LDC )
END IF