SUBROUTINE DORGTR( UPLO, N, A, LDA, TAU, WORK, LWORK, INFO) CHARACTER * 1 UPLO INTEGER N, LDA, LWORK, INFO DOUBLE PRECISION A(LDA,*), TAU(*), WORK(*) SUBROUTINE DORGTR_64( UPLO, N, A, LDA, TAU, WORK, LWORK, INFO) CHARACTER * 1 UPLO INTEGER*8 N, LDA, LWORK, INFO DOUBLE PRECISION A(LDA,*), TAU(*), WORK(*)
SUBROUTINE ORGTR( UPLO, [N], A, [LDA], TAU, [WORK], [LWORK], [INFO]) CHARACTER(LEN=1) :: UPLO INTEGER :: N, LDA, LWORK, INFO REAL(8), DIMENSION(:) :: TAU, WORK REAL(8), DIMENSION(:,:) :: A SUBROUTINE ORGTR_64( UPLO, [N], A, [LDA], TAU, [WORK], [LWORK], * [INFO]) CHARACTER(LEN=1) :: UPLO INTEGER(8) :: N, LDA, LWORK, INFO REAL(8), DIMENSION(:) :: TAU, WORK REAL(8), DIMENSION(:,:) :: A
void dorgtr(char uplo, int n, double *a, int lda, double *tau, int *info);
void dorgtr_64(char uplo, long n, double *a, long lda, double *tau, long *info);
if UPLO = 'U', Q = H(n-1) . . . H(2) H(1),
if UPLO = 'L', Q = H(1) H(2) . . . H(n-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.