SUBROUTINE ZUNGRQ( M, N, K, A, LDA, TAU, WORK, LWORK, INFO) DOUBLE COMPLEX A(LDA,*), TAU(*), WORK(*) INTEGER M, N, K, LDA, LWORK, INFO SUBROUTINE ZUNGRQ_64( M, N, K, A, LDA, TAU, WORK, LWORK, INFO) DOUBLE COMPLEX A(LDA,*), TAU(*), WORK(*) INTEGER*8 M, N, K, LDA, LWORK, INFO
SUBROUTINE UNGRQ( M, [N], [K], A, [LDA], TAU, [WORK], [LWORK], [INFO]) COMPLEX(8), DIMENSION(:) :: TAU, WORK COMPLEX(8), DIMENSION(:,:) :: A INTEGER :: M, N, K, LDA, LWORK, INFO SUBROUTINE UNGRQ_64( M, [N], [K], A, [LDA], TAU, [WORK], [LWORK], * [INFO]) COMPLEX(8), DIMENSION(:) :: TAU, WORK COMPLEX(8), DIMENSION(:,:) :: A INTEGER(8) :: M, N, K, LDA, LWORK, INFO
void zungrq(int m, int n, int k, doublecomplex *a, int lda, doublecomplex *tau, int *info);
void zungrq_64(long m, long n, long k, doublecomplex *a, long lda, doublecomplex *tau, long *info);
Q = H(1)' H(2)' . . . H(k)'
as returned by CGERQF.
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.