SUBROUTINE CUNMBR( VECT, SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER * 1 VECT, SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER M, N, K, LDA, LDC, LWORK, INFO SUBROUTINE CUNMBR_64( VECT, SIDE, TRANS, M, N, K, A, LDA, TAU, C, * LDC, WORK, LWORK, INFO) CHARACTER * 1 VECT, SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER*8 M, N, K, LDA, LDC, LWORK, INFO
SUBROUTINE UNMBR( VECT, SIDE, [TRANS], [M], [N], K, A, [LDA], TAU, * C, [LDC], [WORK], [LWORK], [INFO]) CHARACTER(LEN=1) :: VECT, SIDE, TRANS COMPLEX, DIMENSION(:) :: TAU, WORK COMPLEX, DIMENSION(:,:) :: A, C INTEGER :: M, N, K, LDA, LDC, LWORK, INFO SUBROUTINE UNMBR_64( VECT, SIDE, [TRANS], [M], [N], K, A, [LDA], * TAU, C, [LDC], [WORK], [LWORK], [INFO]) CHARACTER(LEN=1) :: VECT, SIDE, TRANS COMPLEX, DIMENSION(:) :: TAU, WORK COMPLEX, DIMENSION(:,:) :: A, C INTEGER(8) :: M, N, K, LDA, LDC, LWORK, INFO
void cunmbr(char vect, char side, char trans, int m, int n, int k, complex *a, int lda, complex *tau, complex *c, int ldc, int *info);
void cunmbr_64(char vect, char side, char trans, long m, long n, long k, complex *a, long lda, complex *tau, complex *c, long ldc, long *info);
If VECT = 'P', CUNMBR overwrites the general complex M-by-N matrix C with
SIDE = 'L' SIDE = 'R'
TRANS = 'N': P * C C * P
TRANS = 'C': P**H * C C * P**H
Here Q and P**H are the unitary matrices determined by CGEBRD when reducing a complex matrix A to bidiagonal form: A = Q * B * P**H. Q and P**H are defined as products of elementary reflectors H(i) and G(i) respectively.
Let nq = m if SIDE = 'L' and nq = n if SIDE = 'R'. Thus nq is the order of the unitary matrix Q or P**H that is applied.
If VECT = 'Q', A is assumed to have been an NQ-by-K matrix: if nq >= k, Q = H(1) H(2) . . . H(k);
if nq < k, Q = H(1) H(2) . . . H(nq-1).
If VECT = 'P', A is assumed to have been a K-by-NQ matrix: if k < nq, P = G(1) G(2) . . . G(k);
if k >= nq, P = G(1) G(2) . . . G(nq-1).
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.