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# BLAS

Copyright (C) 2005 IENT-RWTH Aachen

Linear Algebra

Examples

    {
      int n=8;
      DenseVector<float>::self X(n,1), Y(n,2);
      cblas_sdot(X.size(),&X[0],1,&Y[0],1);
      cout << Y << endl;
    }

    {
      int m=8, n=8;
      DenseMatrix<double>::self A(m,n,1);
      DenseVector<double>::self X(m,1), Y(m);
      cblas_dgemv(CblasRowMajor,CblasNoTrans, A.nrows(),A.ncols(), (double)1,&A(0,0),n, &X[0],1, (double)1,&Y|0],1);
      cout << Y << endl;
    }

    {
      int m=8, n=8, k=8;
      complex<float> alpha(1,0), beta(0,0);
      DenseMatrix<complex<float> >::self X(m,k,1), Y(k,n,2), Z(m,n);
      cblas_cgemm(CblasRowMajor,CblasNoTrans,CblasNoTrans, Z.nrows(),X.ncols(),Z.ncols(), (void *)&alpha,(void *)&X(0,0),k,(void *)&Y(0,0),n, (void *)&beta,(void *)&Z(0,0),n);
      cout << Z << endl;
    }

Level 1 | Vector Algebra
Level 2 | Matrix-Vector Algebra
Level 3 | Matrix-Matrix Algebra

See Also

C Interface