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 sorg2r_fla(
integer *,
integer *,
integer *,
real *,
integer *,
real *,
real *,
integer *), slarfb_(
char *,
char *,
char *,
char *,
integer *,
integer *,
integer *,
real *,
integer * ,
real *,
integer *,
real *,
integer *,
real *,
integer *), xerbla_(
char *,
integer *);
159 a_offset = 1 + a_dim1;
165 nb = ilaenv_(&c__1,
"SORGQR",
" ", m, n, k, &c_n1);
166 lwkopt = max(1,*n) * nb;
167 work[1] = (
real) lwkopt;
168 lquery = *lwork == -1;
173 else if (*n < 0 || *n > *m)
177 else if (*k < 0 || *k > *n)
181 else if (*lda < max(1,*m))
185 else if (*lwork < max(1,*n) && ! lquery)
192 xerbla_(
"SORGQR", &i__1);
208 if (nb > 1 && nb < *k)
213 i__2 = ilaenv_(&c__3,
"SORGQR",
" ", m, n, k, &c_n1);
224 nb = *lwork / ldwork;
227 i__2 = ilaenv_(&c__2,
"SORGQR",
" ", m, n, k, &c_n1);
228 nbmin = max(i__1,i__2);
232 if (nb >= nbmin && nb < *k && nx < *k)
236 ki = (*k - nx - 1) / nb * nb;
252 a[i__ + j * a_dim1] = 0.f;
268 sorg2r_fla(&i__1, &i__2, &i__3, &a[kk + 1 + (kk + 1) * a_dim1], lda, & tau[kk + 1], &work[1], &iinfo);
275 i__1 < 0 ? i__ >= 1 : i__ <= 1;
287 slarft_(
"Forward",
"Columnwise", &i__2, &ib, &a[i__ + i__ * a_dim1], lda, &tau[i__], &work[1], &ldwork);
290 i__3 = *n - i__ - ib + 1;
291 slarfb_(
"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);
295 sorg2r_fla(&i__2, &ib, &ib, &a[i__ + i__ * a_dim1], lda, &tau[i__], & work[1], &iinfo);
307 a[l + j * a_dim1] = 0.f;
315 work[1] = (
real) iws;
int sorg2r_fla(integer *m, integer *n, integer *k, real *a, integer *lda, real *tau, real *work, integer *info)
Definition: sorg2r.c:105
float real
Definition: FLA_f2c.h:30
int logical
Definition: FLA_f2c.h:36
int integer
Definition: FLA_f2c.h:25