cunmr2 - overwrite the general complex m-by-n matrix C with Q * C if SIDE = 'L' and TRANS = 'N', or Q'* C if SIDE = 'L' and TRANS = 'C', or C * Q if SIDE = 'R' and TRANS = 'N', or C * Q' if SIDE = 'R' and TRANS = 'C',
SUBROUTINE CUNMR2( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, * INFO) CHARACTER * 1 SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER M, N, K, LDA, LDC, INFO
SUBROUTINE CUNMR2_64( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, * WORK, INFO) CHARACTER * 1 SIDE, TRANS COMPLEX A(LDA,*), TAU(*), C(LDC,*), WORK(*) INTEGER*8 M, N, K, LDA, LDC, INFO
SUBROUTINE UNMR2( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C, [LDC], * [WORK], [INFO]) CHARACTER(LEN=1) :: SIDE, TRANS COMPLEX, DIMENSION(:) :: TAU, WORK COMPLEX, DIMENSION(:,:) :: A, C INTEGER :: M, N, K, LDA, LDC, INFO
SUBROUTINE UNMR2_64( SIDE, TRANS, [M], [N], [K], A, [LDA], TAU, C, * [LDC], [WORK], [INFO]) CHARACTER(LEN=1) :: SIDE, TRANS COMPLEX, DIMENSION(:) :: TAU, WORK COMPLEX, DIMENSION(:,:) :: A, C INTEGER(8) :: M, N, K, LDA, LDC, INFO
#include <sunperf.h>
void cunmr2(char side, char trans, int m, int n, int k, complex *a, int lda, complex *tau, complex *c, int ldc, int *info);
void cunmr2_64(char side, char trans, long m, long n, long k, complex *a, long lda, complex *tau, complex *c, long ldc, long *info);
cunmr2 overwrites the general complex m-by-n matrix C with
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 CGERQF. Q is of order m if SIDE = 'L' and of order n if SIDE = 'R'.
= 'L': apply Q or Q' from the Left
= 'R': apply Q or Q' from the Right
= 'N': apply Q (No transpose)
= 'C': apply Q' (Conjugate transpose)
TAU(i)
must contain the scalar factor of the elementary
reflector H(i), as returned by CGERQF.
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value