Tsqr_Blas.hpp

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// ***********************************************************************
//
//                 Anasazi: Block Eigensolvers Package
//                 Copyright (2010) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// Lesser General Public License for more details.
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// License along with this library; if not, write to the Free Software
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
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#ifndef __TSQR_TsqrBlas_hpp
#define __TSQR_TsqrBlas_hpp


namespace TSQR {

  template< class Ordinal, class Scalar >
  class BLAS {
  public:
    BLAS () {}

    void 
    GEMV (const char* const trans, 
    const Ordinal m, 
    const Ordinal n,
    const Scalar alpha,
    const Scalar A[],
    const Ordinal lda,
    const Scalar x[],
    const Ordinal incx,
    const Scalar beta,
    Scalar y[],
    const Ordinal incy);

    void
    GEMM (const char* const transa,
    const char* const transb,
    const Ordinal m,
    const Ordinal n,
    const Ordinal k,
    const Scalar alpha,
    const Scalar A[],
    const Ordinal lda,
    const Scalar B[],
    const Ordinal ldb,
    const Scalar beta,
    Scalar C[],
    const Ordinal ldc);

    void
    GER (const Ordinal m,
   const Ordinal n,
   const Scalar alpha,
   const Scalar x[],
   const Ordinal incx,
   const Scalar y[],
   const Ordinal incy,
   Scalar A[],
   const Ordinal lda);

    void
    TRSM (const char* const side,
    const char* const uplo,
    const char* const transa,
    const char* const diag,
    const Ordinal m,
    const Ordinal n,
    const Scalar alpha,
    const Scalar A[],
    const Ordinal lda,
    Scalar B[],
    const Ordinal ldb);

  private:
    BLAS (const BLAS&);
    BLAS& operator= (const BLAS&);
  };

} // namespace TSQR

#endif // __TSQR_TsqrBlas_hpp