laenv.tcc (ulmblas/impl/lapack/laenv.tcc)

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#ifndef ULMBLAS_IMPL_LAPACK_LAENV_TCC

#define ULMBLAS_IMPL_LAPACK_LAENV_TCC 1

#include <cassert>

#include <cstring>

#include <ulmblas/impl/lapack/laenv.h>

namespace ulmBLAS {

template <typename T>

long

laenv(long        spec,

      const char  *name,

      const char  *opts,

      long        n1,

      long        n2,

      long        n3,

      long        n4)

{

    long result = -1;

    switch (spec) {

//

//      optimal blocksize

//

        case 1:

            result = 32;

            if (strcmp(name, "GETRF")==0) {

                result = 64;

            }

            break;

//

//      minimal blocksize

//

        case 2:

            result = 2;

            break;

//

//      crossover point

//

        case 3:

            result = 32;

            break;

//

//      DEPRECATED: number of shifts used in the nonsymmetric eigenvalue

//                  routines

//

        case 4:

            assert(0);

            break;

//

//      12 <= pec<= 16: hseqr or one of its subroutines ..

//

        case 12:

        case 13:

        case 14:

        case 15:

        case 16:

            break;

        default:

            assert(0);

            result = -1;

            break;

    }

    assert(result!=-1);

    return result;

}

} // namespace ulmBLAS

#endif // ULMBLAS_IMPL_LAPACK_LAENV_TCC