zunmrz - overwrite the general complex M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N'
SUBROUTINE ZUNMRZ( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER * 1 SIDE, TRANS DOUBLE COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE ZUNMRZ_64( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER * 1 SIDE, TRANS DOUBLE COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER*8 M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE ZUNMRZ( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER(LEN=1) :: SIDE, TRANS COMPLEX(8), DIMENSION(:) :: TAU, WORK COMPLEX(8), DIMENSION(:,:) :: A, C INTEGER :: M, N, K, L, LDA, LDC, LWORK, INFO
SUBROUTINE ZUNMRZ_64( SIDE, TRANS, M, N, K, L, A, LDA, TAU, C, LDC, * WORK, LWORK, INFO) CHARACTER(LEN=1) :: SIDE, TRANS COMPLEX(8), DIMENSION(:) :: TAU, WORK COMPLEX(8), DIMENSION(:,:) :: A, C INTEGER(8) :: M, N, K, L, LDA, LDC, LWORK, INFO
#include <sunperf.h>
void zunmrz(char side, char trans, int m, int n, int k, int l, doublecomplex *a, int lda, doublecomplex *tau, doublecomplex *c, int ldc, doublecomplex *work, int lwork, int *info);
void zunmrz_64(char side, char trans, long m, long n, long k, long l, doublecomplex *a, long lda, doublecomplex *tau, doublecomplex *c, long ldc, doublecomplex *work, long lwork, long *info);
zunmrz 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(1) H(2) . . . H(k)
as returned by CTZRZF. 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 CTZRZF.
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
Based on contributions by
A. Petitet, Computer Science Dept., Univ. of Tenn., Knoxville, USA