cunml2
cunml2 - overwrite the general complex m-by-n matrix C with Q * C if SIDE = 'L' and TRANS = 'N', or Q'* C if SIDE = 'L' and TRANS = 'C', or C * Q if SIDE = 'R' and TRANS = 'N', or C * Q' if SIDE = 'R' and TRANS = 'C',
SUBROUTINE CUNML2( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK,
* INFO)
CHARACTER * 1 SIDE, TRANS
COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
INTEGER M, N, K, LDA, LDC, INFO
SUBROUTINE CUNML2_64( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC,
* WORK, INFO)
CHARACTER * 1 SIDE, TRANS
COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*)
INTEGER*8 M, N, K, LDA, LDC, INFO
SUBROUTINE UNML2( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C, [LDC],
* [WORK], [INFO])
CHARACTER(LEN=1) :: SIDE, TRANS
COMPLEX, DIMENSION(:) :: TAU, WORK
COMPLEX, DIMENSION(:,:) :: A, C
INTEGER :: M, N, K, LDA, LDC, INFO
SUBROUTINE UNML2_64( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C,
* [LDC], [WORK], [INFO])
CHARACTER(LEN=1) :: SIDE, TRANS
COMPLEX, DIMENSION(:) :: TAU, WORK
COMPLEX, DIMENSION(:,:) :: A, C
INTEGER(8) :: M, N, K, LDA, LDC, INFO
#include <sunperf.h>
void cunml2(char side, char trans, int m, int n, int k, complex *a, int lda, complex *tau, complex *c, int ldc, int *info);
void cunml2_64(char side, char trans, long m, long n, long k, complex *a, long lda, complex *tau, complex *c, long ldc, long *info);
cunml2 overwrites the general complex m-by-n matrix C with
where Q is a complex unitary matrix defined as the product of k
elementary reflectors
Q = H(k)' . . . H(2)' H(1)'
as returned by CGELQF. 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)
-
-
* M (input)
-
The number of rows of the matrix C. M >= 0.
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* N (input)
-
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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* 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
CGELQF in the first 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 CGELQF.
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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'*C or C*Q' 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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(N) if SIDE = 'L',
(M) if SIDE = 'R'
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* INFO (output)
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