sorgql - N real matrix Q with orthonormal columns,
SUBROUTINE SORGQL(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER M, N, K, LDA, LDWORK, INFO REAL A(LDA,*), TAU(*), WORK(*) SUBROUTINE SORGQL_64(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER*8 M, N, K, LDA, LDWORK, INFO REAL A(LDA,*), TAU(*), WORK(*) F95 INTERFACE SUBROUTINE ORGQL(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER :: M, N, K, LDA, LDWORK, INFO REAL, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A SUBROUTINE ORGQL_64(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER(8) :: M, N, K, LDA, LDWORK, INFO REAL, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A C INTERFACE #include <sunperf.h> void sorgql(int m, int n, int k, float *a, int lda, float *tau, int *info); void sorgql_64(long m, long n, long k, float *a, long lda, float *tau, long *info);
Oracle Solaris Studio Performance Library sorgql(3P) NAME sorgql - generate an M-by-N real matrix Q with orthonormal columns, SYNOPSIS SUBROUTINE SORGQL(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER M, N, K, LDA, LDWORK, INFO REAL A(LDA,*), TAU(*), WORK(*) SUBROUTINE SORGQL_64(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER*8 M, N, K, LDA, LDWORK, INFO REAL A(LDA,*), TAU(*), WORK(*) F95 INTERFACE SUBROUTINE ORGQL(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER :: M, N, K, LDA, LDWORK, INFO REAL, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A SUBROUTINE ORGQL_64(M, N, K, A, LDA, TAU, WORK, LDWORK, INFO) INTEGER(8) :: M, N, K, LDA, LDWORK, INFO REAL, DIMENSION(:) :: TAU, WORK REAL, DIMENSION(:,:) :: A C INTERFACE #include <sunperf.h> void sorgql(int m, int n, int k, float *a, int lda, float *tau, int *info); void sorgql_64(long m, long n, long k, float *a, long lda, float *tau, long *info); PURPOSE sorgql generates an M-by-N real matrix Q with orthonormal columns, which is defined as the last N columns of a product of K elementary reflectors of order M Q = H(k) . . . H(2) H(1) as returned by SGEQLF. ARGUMENTS M (input) The number of rows of the matrix Q. M >= 0. N (input) The number of columns of the matrix Q. M >= N >= 0. K (input) The number of elementary reflectors whose product defines the matrix Q. N >= K >= 0. A (input/output) On entry, the (n-k+i)-th column must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by SGEQLF in the last k columns of its array argu- ment A. On exit, the M-by-N matrix Q. LDA (input) The first dimension of the array A. LDA >= max(1,M). TAU (input) TAU(i) must contain the scalar factor of the elementary reflector H(i), as returned by SGEQLF. WORK (workspace) On exit, if INFO = 0, WORK(1) returns the optimal LDWORK. LDWORK (input) The dimension of the array WORK. LDWORK >= max(1,N). For optimum performance LDWORK >= N*NB, where NB is the optimal blocksize. If LDWORK = -1, then a workspace query is assumed; the rou- tine 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 LDWORK is issued by XERBLA. INFO (output) = 0: successful exit < 0: if INFO = -i, the i-th argument has an illegal value 7 Nov 2015 sorgql(3P)