126 integer a_dim1, a_offset, i__1, i__2, i__3;
128 integer i__, j, l, ib, nb, ki, kk, nx, iws, nbmin, iinfo;
130 int dorg2r_fla(
integer *,
integer *,
integer *,
doublereal *,
integer *,
doublereal *,
doublereal *,
integer *), dlarfb_(
char *,
char *,
char *,
char *,
integer *,
integer *,
integer *,
doublereal *,
integer *,
doublereal *,
integer *,
doublereal *,
integer *,
doublereal *,
integer *), dlarft_(
char *,
char *,
integer *,
integer *,
doublereal *,
integer *,
doublereal *,
doublereal *,
integer *), xerbla_(
char *,
integer *);
157 a_offset = 1 + a_dim1;
163 nb = ilaenv_(&c__1,
"DORGQR",
" ", m, n, k, &c_n1);
164 lwkopt = max(1,*n) * nb;
166 lquery = *lwork == -1;
171 else if (*n < 0 || *n > *m)
175 else if (*k < 0 || *k > *n)
179 else if (*lda < max(1,*m))
183 else if (*lwork < max(1,*n) && ! lquery)
190 xerbla_(
"DORGQR", &i__1);
206 if (nb > 1 && nb < *k)
211 i__2 = ilaenv_(&c__3,
"DORGQR",
" ", m, n, k, &c_n1);
222 nb = *lwork / ldwork;
225 i__2 = ilaenv_(&c__2,
"DORGQR",
" ", m, n, k, &c_n1);
226 nbmin = max(i__1,i__2);
230 if (nb >= nbmin && nb < *k && nx < *k)
234 ki = (*k - nx - 1) / nb * nb;
250 a[i__ + j * a_dim1] = 0.;
266 dorg2r_fla(&i__1, &i__2, &i__3, &a[kk + 1 + (kk + 1) * a_dim1], lda, & tau[kk + 1], &work[1], &iinfo);
273 i__1 < 0 ? i__ >= 1 : i__ <= 1;
285 dlarft_(
"Forward",
"Columnwise", &i__2, &ib, &a[i__ + i__ * a_dim1], lda, &tau[i__], &work[1], &ldwork);
288 i__3 = *n - i__ - ib + 1;
289 dlarfb_(
"Left",
"No transpose",
"Forward",
"Columnwise", & i__2, &i__3, &ib, &a[i__ + i__ * a_dim1], lda, &work[ 1], &ldwork, &a[i__ + (i__ + ib) * a_dim1], lda, & work[ib + 1], &ldwork);
293 dorg2r_fla(&i__2, &ib, &ib, &a[i__ + i__ * a_dim1], lda, &tau[i__], & work[1], &iinfo);
305 a[l + j * a_dim1] = 0.;
int dorg2r_fla(integer *m, integer *n, integer *k, doublereal *a, integer *lda, doublereal *tau, doublereal *work, integer *info)
Definition: dorg2r.c:105
double doublereal
Definition: FLA_f2c.h:31
int logical
Definition: FLA_f2c.h:36
int integer
Definition: FLA_f2c.h:25