slatzm (l) - Linux Manuals

slatzm: routine i deprecated and has been replaced by routine SORMRZ

Command to display slatzm manual in Linux: $ man l slatzm

NAME

SLATZM - routine i deprecated and has been replaced by routine SORMRZ

SYNOPSIS

SUBROUTINE SLATZM(: SIDE, M, N, V, INCV, TAU, C1, C2, LDC, WORK )
: CHARACTER SIDE
: INTEGER INCV, LDC, M, N
: REAL TAU
: REAL C1( LDC, * ), C2( LDC, * ), V( * ), WORK( * )

PURPOSE

This routine is deprecated and has been replaced by routine SORMRZ. SLATZM applies a Householder matrix generated by STZRQF to a matrix. Let P = I - tau*u*uaq, u = ( 1 ),

                      ( v )
where v is an (m-1) vector if SIDE = aqLaq, or a (n-1) vector if SIDE = aqRaq.
If SIDE equals aqLaq, let

C = [ C1 ] 1

     [ C2 ] m-1

       n
Then C is overwritten by P*C.
If SIDE equals aqRaq, let

C = [ C1, C2 ] m

        1  n-1
Then C is overwritten by C*P.

ARGUMENTS

SIDE (input) CHARACTER*1: = aqLaq: form P * C
= aqRaq: form C * P
M (input) INTEGER: The number of rows of the matrix C.
N (input) INTEGER: The number of columns of the matrix C.
V (input) REAL array, dimension: (1 + (M-1)*abs(INCV)) if SIDE = aqLaq (1 + (N-1)*abs(INCV)) if SIDE = aqRaq The vector v in the representation of P. V is not used if TAU = 0.
INCV (input) INTEGER: The increment between elements of v. INCV <> 0
TAU (input) REAL: The value tau in the representation of P.
C1 (input/output) REAL array, dimension: (LDC,N) if SIDE = aqLaq (M,1) if SIDE = aqRaq On entry, the n-vector C1 if SIDE = aqLaq, or the m-vector C1 if SIDE = aqRaq. On exit, the first row of P*C if SIDE = aqLaq, or the first column of C*P if SIDE = aqRaq.
C2 (input/output) REAL array, dimension: (LDC, N) if SIDE = aqLaq (LDC, N-1) if SIDE = aqRaq On entry, the (m - 1) x n matrix C2 if SIDE = aqLaq, or the m x (n - 1) matrix C2 if SIDE = aqRaq. On exit, rows 2:m of P*C if SIDE = aqLaq, or columns 2:m of C*P if SIDE = aqRaq.
LDC (input) INTEGER: The leading dimension of the arrays C1 and C2. LDC >= (1,M).
WORK (workspace) REAL array, dimension: (N) if SIDE = aqLaq (M) if SIDE = aqRaq