int ATL_getriC(const int N, TYPE *A, const int lda, const int *ipiv,
TYPE *wrk, const int lwrk)
{
const int lda2 = lda SHIFT;
int J, jb, nb, nright, iret;
TYPE *A0 = A;
#ifdef TREAL
const TYPE one=ATL_rone, none=ATL_rnone;
#else
const TYPE one[2]={ATL_rone,ATL_rzero}, none[2]={ATL_rnone, ATL_rzero};
#endif
iret = ATL_trtri(CblasColMajor, CblasUpper, CblasNonUnit, N, A, lda);
if (!iret && N > 1)
{
/*
* Find largest NB we can use with our provided workspace
*/
jb = lwrk / N;
if (jb >= NB) nb = ATL_MulByNB(ATL_DivByNB(jb));
else if (jb >= ATL_mmNU) nb = (jb/ATL_mmNU)*ATL_mmNU;
else nb = jb;
if (!nb) return(-6); /* need at least 1 col of workspace */
/*
* Only first iteration will have partial block, unroll it
*/
jb = N - (N/nb)*nb;
if (!jb) jb = nb;
J = N - jb;
A += lda2*J;
trcpzeroL(jb, jb, A+(J SHIFT), lda, wrk, jb);
cblas_trsm(CblasColMajor, CblasRight, CblasLower, CblasNoTrans, CblasUnit,
N, jb, one, wrk, jb, A, lda);
if (J)
{
do
{
J -= nb;
A -= nb*lda2;
nright = N-J;
trcpzeroL(nright, nb, A+(J SHIFT), lda, wrk, nright);
cblas_gemm(CblasColMajor, CblasNoTrans, CblasNoTrans, N, nb,
nright-nb, none, A+nb*lda2, lda, wrk+(nb SHIFT), nright,
one, A, lda);
cblas_trsm(CblasColMajor, CblasRight, CblasLower, CblasNoTrans,
CblasUnit, N, nb, one, wrk, nright, A, lda);
}
while(J);
}
/*
* Apply column interchanges
*/
for (J=N-2; J >= 0; J--)
{
jb = ipiv[J];
if (jb != J) cblas_swap(N, A+J*lda2, 1, A+jb*lda2, 1);
}
}
return(iret);
}
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions, and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the ATLAS group or the names of its contributers may
* not be used to endorse or promote products derived from this
* software without specific written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ATLAS GROUP OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "f77wrap_lapack.h"
#include "atlas_lapack.h"
void F77WRAP_TRTRI(const F77_INTEGER *iuplo, const F77_INTEGER *idiag,
const F77_INTEGER *N, TYPE *A,
const F77_INTEGER *lda, F77_INTEGER *info
ATL_STRLEN_1)
{
*info = ATL_trtri(AtlasColMajor, *iuplo, *idiag, *N, A, *lda);
}
