clatzm.f - Man Page
SRC/DEPRECATED/clatzm.f
Synopsis
Functions/Subroutines
subroutine clatzm (side, m, n, v, incv, tau, c1, c2, ldc, work)
CLATZM
Function/Subroutine Documentation
subroutine clatzm (character side, integer m, integer n, complex, dimension( * ) v, integer incv, complex tau, complex, dimension( ldc, * ) c1, complex, dimension( ldc, * ) c2, integer ldc, complex, dimension( * ) work)
CLATZM
Purpose:
This routine is deprecated and has been replaced by routine CUNMRZ. CLATZM applies a Householder matrix generated by CTZRQF to a matrix. Let P = I - tau*u*u**H, 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 COMPLEX 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 COMPLEX The value tau in the representation of P.
C1
C1 is COMPLEX 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 COMPLEX 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 >= max(1,M).
WORK
WORK is COMPLEX 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 151 of file clatzm.f.
Author
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Referenced By
The man page clatzm(3) is an alias of clatzm.f(3).
Tue Nov 28 2023 12:08:41 Version 3.12.0 LAPACK