cunmrz
cunmrz - overwrite the general complex M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N'
SUBROUTINE CUNMRZ( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC,
* WORK, LWORK, INFO)
CHARACTER * 1 SIDE, TRANS
COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
INTEGER M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE CUNMRZ_64( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC,
* WORK, LWORK, INFO)
CHARACTER * 1 SIDE, TRANS
COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
INTEGER*8 M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE CUNMRZ( SIDE, TRANS, M, N, K, L, A, [LDA], TAU, C, [LDC],
* [WORK], [LWORK], [INFO])
CHARACTER(LEN=1) :: SIDE, TRANS
COMPLEX, DIMENSION(:) :: TAU, WORK
COMPLEX, DIMENSION(:,:) :: A, C
INTEGER :: M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE CUNMRZ_64( SIDE, TRANS, M, N, K, L, A, [LDA], TAU, C,
* [LDC], [WORK], [LWORK], [INFO])
CHARACTER(LEN=1) :: SIDE, TRANS
COMPLEX, DIMENSION(:) :: TAU, WORK
COMPLEX, DIMENSION(:,:) :: A, C
INTEGER(8) :: M, N, K, L, LDA, LDC, LWORK, INFO
#include <sunperf.h>
void cunmrz(char side, char trans, int m, int n, int k, int l, complex *a, int lda, complex *tau, complex *c, int ldc, int *info);
void cunmrz_64(char side, char trans, long m, long n, long k, long l, complex *a, long lda, complex *tau, complex *c, long ldc, long *info);
cunmrz overwrites the general complex M-by-N matrix C with
TRANS = 'C': Q**H * C C * Q**H
where Q is a complex unitary matrix defined as the product of k
elementary reflectors
Q = H(1) H(2) . . . H(k)
as returned by CTZRZF. Q is of order M if SIDE = 'L' and of order N
if SIDE = 'R'.
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* SIDE (input)
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* TRANS (input)
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* M (input)
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The number of rows of the matrix C. M >= 0.
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* N (input)
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The number of columns of the matrix C. N >= 0.
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* K (input)
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The number of elementary reflectors whose product defines
the matrix Q.
If SIDE = 'L', M >= K >= 0;
if SIDE = 'R', N >= K >= 0.
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* L (input)
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The number of columns of the matrix A containing
the meaningful part of the Householder reflectors.
If SIDE = 'L', M >= L >= 0, if SIDE = 'R', N >= L >= 0.
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* A (input)
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(LDA,M) if SIDE = 'L',
(LDA,N) if SIDE = 'R'
The i-th row must contain the vector which defines the
elementary reflector H(i), for i = 1,2,...,k, as returned by
CTZRZF in the last k rows of its array argument A.
A is modified by the routine but restored on exit.
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* LDA (input)
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The leading dimension of the array A. LDA >= max(1,K).
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* TAU (input)
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TAU(i) must contain the scalar factor of the elementary
reflector H(i), as returned by CTZRZF.
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* C (input/output)
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On entry, the M-by-N matrix C.
On exit, C is overwritten by Q*C or Q**H*C or C*Q**H or C*Q.
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* LDC (input)
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The leading dimension of the array C. LDC >= max(1,M).
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* WORK (workspace)
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On exit, if INFO = 0, WORK(1) returns the optimal LWORK.
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* LWORK (input)
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The dimension of the array WORK.
If SIDE = 'L', LWORK >= max(1,N);
if SIDE = 'R', LWORK >= max(1,M).
For optimum performance LWORK >= N*NB if SIDE = 'L', and
LWORK >= M*NB if SIDE = 'R', where NB is the optimal
blocksize.
If LWORK = -1, then a workspace query is assumed; the routine
only calculates the optimal size of the WORK array, returns
this value as the first entry of the WORK array, and no error
message related to LWORK is issued by XERBLA.
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* INFO (output)
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