SUBROUTINE DORMLQ( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, * LWORK, INFO) CHARACTER * 1 SIDE, TRANS INTEGER M, N, K, LDA, LDC, LWORK, INFO DOUBLE PRECISION A(LDA,*), TAU(*), C(LDC,*), WORK(*) SUBROUTINE DORMLQ_64( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER * 1 SIDE, TRANS INTEGER*8 M, N, K, LDA, LDC, LWORK, INFO DOUBLE PRECISION A(LDA,*), TAU(*), C(LDC,*), WORK(*)
SUBROUTINE ORMLQ( SIDE, [TRANS], [M], [N], [K], A, [LDA], TAU, C, * [LDC], [WORK], [LWORK], [INFO]) CHARACTER(LEN=1) :: SIDE, TRANS INTEGER :: M, N, K, LDA, LDC, LWORK, INFO REAL(8), DIMENSION(:) :: TAU, WORK REAL(8), DIMENSION(:,:) :: A, C SUBROUTINE ORMLQ_64( SIDE, [TRANS], [M], [N], [K], A, [LDA], TAU, C, * [LDC], [WORK], [LWORK], [INFO]) CHARACTER(LEN=1) :: SIDE, TRANS INTEGER(8) :: M, N, K, LDA, LDC, LWORK, INFO REAL(8), DIMENSION(:) :: TAU, WORK REAL(8), DIMENSION(:,:) :: A, C
void dormlq(char side, char trans, int m, int n, int k, double *a, int lda, double *tau, double *c, int ldc, int *info);
void dormlq_64(char side, char trans, long m, long n, long k, double *a, long lda, double *tau, double *c, long ldc, long *info);
where Q is a real orthogonal matrix defined as the product of k elementary reflectors
Q = H(k) . . . H(2) H(1)
as returned by SGELQF. Q is of order M if SIDE = 'L' and of order N if SIDE = 'R'.
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.