cunmlq - overwrite the general complex M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N'
SUBROUTINE CUNMLQ( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, * LWORK, INFO) CHARACTER * 1 SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER M, N, K, LDA, LDC, LWORK, INFO
SUBROUTINE CUNMLQ_64( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER * 1 SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER*8 M, N, K, LDA, LDC, LWORK, INFO
SUBROUTINE UNMLQ( SIDE, [TRANS], [M], [N], [K], 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, LDA, LDC, LWORK, INFO
SUBROUTINE UNMLQ_64( SIDE, [TRANS], [M], [N], [K], 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, LDA, LDC, LWORK, INFO
#include <sunperf.h>
void cunmlq(char side, char trans, int m, int n, int k, complex *a, int lda, complex *tau, complex *c, int ldc, int *info);
void cunmlq_64(char side, char trans, long m, long n, long k, complex *a, long lda, complex *tau, complex *c, long ldc, long *info);
cunmlq 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(k)' . . . H(2)' H(1)'
as returned by CGELQF. Q is of order M if SIDE = 'L' and of order N if SIDE = 'R'.
= 'L': apply Q or Q**H from the Left;
= 'R': apply Q or Q**H from the Right.
= 'N': No transpose, apply Q;
= 'C': Conjugate transpose, apply Q**H.
TAU(i)
must contain the scalar factor of the elementary
reflector H(i), as returned by CGELQF.
WORK(1)
returns the optimal LWORK.
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.
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value