SRC/DEPRECATED/dlatzm.f(3)

NAME
SRC/DEPRECATED/dlatzm.f

SYNOPSIS

  Functions/Subroutines
subroutine dlatzm (side, m, n, v, incv, tau, c1, c2, ldc, work)
DLATZM

Function/Subroutine Documentation

  subroutine dlatzm (character side, integer m, integer n, double precision, dimension( * ) v, integer incv, double precision tau, double precision, dimension( ldc, * ) c1, double precision, dimension( ldc, * ) c2, integer ldc, double precision, dimension( * ) work)

DLATZM

Purpose:

    !>
    !> This routine is deprecated and has been replaced by routine DORMRZ.
    !>
    !> DLATZM applies a Householder matrix generated by DTZRQF to a matrix.
    !>
    !> Let P = I - tau*u*u**T,   u = ( 1 ),
    !>                               ( v )
    !> where v is an (m-1) vector if SIDE = 'L', or a (n-1) vector if
    !> SIDE = 'R'.
    !>
    !> If SIDE equals 'L', let
    !>        C = [ C1 ] 1
    !>            [ C2 ] m-1
    !>              n
    !> Then C is overwritten by P*C.
    !>
    !> If SIDE equals 'R', let
    !>        C = [ C1, C2 ] m
    !>               1  n-1
    !> Then C is overwritten by C*P.
    !>

Parameters
    SIDE

    !>          SIDE is CHARACTER*1
    !>          = 'L': form P * C
    !>          = 'R': form C * P
    !>

    M

    !>          M is INTEGER
    !>          The number of rows of the matrix C.
    !>

    N

    !>          N is INTEGER
    !>          The number of columns of the matrix C.
    !>

    V

    !>          V is DOUBLE PRECISION array, dimension
    !>                  (1 + (M-1)*abs(INCV)) if SIDE = 'L'
    !>                  (1 + (N-1)*abs(INCV)) if SIDE = 'R'
    !>          The vector v in the representation of P. V is not used
    !>          if TAU = 0.
    !>

    INCV

    !>          INCV is INTEGER
    !>          The increment between elements of v. INCV <> 0
    !>

    TAU

    !>          TAU is DOUBLE PRECISION
    !>          The value tau in the representation of P.
    !>

    C1

    !>          C1 is DOUBLE PRECISION array, dimension
    !>                         (LDC,N) if SIDE = 'L'
    !>                         (M,1)   if SIDE = 'R'
    !>          On entry, the n-vector C1 if SIDE = 'L', or the m-vector C1
    !>          if SIDE = 'R'.
    !>
    !>          On exit, the first row of P*C if SIDE = 'L', or the first
    !>          column of C*P if SIDE = 'R'.
    !>

    C2

    !>          C2 is DOUBLE PRECISION array, dimension
    !>                         (LDC, N)   if SIDE = 'L'
    !>                         (LDC, N-1) if SIDE = 'R'
    !>          On entry, the (m - 1) x n matrix C2 if SIDE = 'L', or the
    !>          m x (n - 1) matrix C2 if SIDE = 'R'.
    !>
    !>          On exit, rows 2:m of P*C if SIDE = 'L', or columns 2:m of C*P
    !>          if SIDE = 'R'.
    !>

    LDC

    !>          LDC is INTEGER
    !>          The leading dimension of the arrays C1 and C2. LDC >= (1,M).
    !>

    WORK

    !>          WORK is DOUBLE PRECISION array, dimension
    !>                      (N) if SIDE = 'L'
    !>                      (M) if SIDE = 'R'
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 150 of file dlatzm.f.

Author

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