sormrq - overwrite the general real M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N'
SUBROUTINE SORMRQ( 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 REAL A(LDA,*), TAU(*), C(LDC,*), WORK(*)
SUBROUTINE SORMRQ_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 REAL A(LDA,*), TAU(*), C(LDC,*), WORK(*)
SUBROUTINE ORMRQ( 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, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A, C
SUBROUTINE ORMRQ_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, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A, C
#include <sunperf.h>
void sormrq(char side, char trans, int m, int n, int k, float *a, int lda, float *tau, float *c, int ldc, int *info);
void sormrq_64(char side, char trans, long m, long n, long k, float *a, long lda, float *tau, float *c, long ldc, long *info);
sormrq overwrites the general real M-by-N matrix C with TRANS = 'T': Q**T * C C * Q**T
where Q is a real orthogonal matrix defined as the product of k elementary reflectors
Q = H(1) H(2) . . . H(k)
as returned by SGERQF. Q is of order M if SIDE = 'L' and of order N if SIDE = 'R'.
= 'L': apply Q or Q**T from the Left;
= 'R': apply Q or Q**T from the Right.
= 'N': No transpose, apply Q;
= 'T': Transpose, apply Q**T.
TAU(i)
must contain the scalar factor of the elementary
reflector H(i), as returned by SGERQF.
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