NAME

       dlatzm.f -

SYNOPSIS

   Functions/Subroutines
       subroutine dlatzm (SIDE, M, N, V, INCV, TAU, C1, C2, LDC, WORK)
           DLATZM

Function/Subroutine Documentation

   subroutine dlatzm (characterSIDE, integerM, integerN, double precision, dimension( * )V,
       integerINCV, double precisionTAU, double precision, dimension( ldc, * )C1, double
       precision, dimension( ldc, * )C2, integerLDC, 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            This routine is deprecated and has been replaced by routine DORMRZ.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.

       Date:
           November 2011

       Definition at line 152 of file dlatzm.f.

Author

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