171 integer a_dim1, a_offset, c_dim1, c_offset, i__1, i__2, i__4, i__5;
180 integer i1, i2, i3, ib, ic, jc, nb, mi, ni, nq, nw, iws;
182 extern logical lsame_(
char *,
char *);
185 int dorm2r_fla(
char *,
char *,
integer *,
integer *,
integer *,
doublereal *,
integer *,
doublereal *,
doublereal *,
integer *,
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 *);
215 a_offset = 1 + a_dim1;
219 c_offset = 1 + c_dim1;
224 left = lsame_(side,
"L");
225 notran = lsame_(trans,
"N");
226 lquery = *lwork == -1;
238 if (! left && ! lsame_(side,
"R"))
242 else if (! notran && ! lsame_(trans,
"T"))
254 else if (*k < 0 || *k > nq)
258 else if (*lda < max(1,nq))
262 else if (*ldc < max(1,*m))
266 else if (*lwork < max(1,nw) && ! lquery)
276 i__2 = ilaenv_(&c__1,
"DORMQR", ch__1, m, n, k, &c_n1);
278 lwkopt = max(1,nw) * nb;
284 xerbla_(
"DORMQR", &i__1);
292 if (*m == 0 || *n == 0 || *k == 0)
299 if (nb > 1 && nb < *k)
304 nb = *lwork / ldwork;
307 i__2 = ilaenv_(&c__2,
"DORMQR", ch__1, m, n, k, &c_n1);
308 nbmin = max(i__1,i__2);
315 if (nb < nbmin || nb >= *k)
318 dorm2r_fla(side, trans, m, n, k, &a[a_offset], lda, &tau[1], &c__[ c_offset], ldc, &work[1], &iinfo);
323 if (left && ! notran || ! left && notran)
331 i1 = (*k - 1) / nb * nb + 1;
348 i__2 < 0 ? i__ >= i__1 : i__ <= i__1;
358 dlarft_(
"Forward",
"Columnwise", &i__4, &ib, &a[i__ + i__ * a_dim1], lda, &tau[i__], t, &c__65) ;
372 dlarfb_(side, trans,
"Forward",
"Columnwise", &mi, &ni, &ib, &a[ i__ + i__ * a_dim1], lda, t, &c__65, &c__[ic + jc * c_dim1], ldc, &work[1], &ldwork);
double doublereal
Definition: FLA_f2c.h:31
int logical
Definition: FLA_f2c.h:36
int integer
Definition: FLA_f2c.h:25
int dorm2r_fla(char *side, char *trans, integer *m, integer *n, integer *k, doublereal *a, integer *lda, doublereal *tau, doublereal *c__, integer *ldc, doublereal *work, integer *info)
Definition: dorm2r.c:151