Description of triangle

triangle_view<Matrix, int Uplo>		Programmers Guide
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Category:containers,generators

Component type:type

Description

A helper class for creating a triangle view into an existing dense or sparse matrix. For sparse matrices, the matrix must already have elements in the appropriate triangular portion of the matrix. This just provides the proper triangular matrix interface.

Example

In banded_view_test.cc:

template <class Matrix>
void print_banded_views(Matrix& A)
{
  using namespace mtl;
  band_view<RowMatrix>::type B(2, 1, A);
}
int main(int argc, char* argv[])
{
  using namespace mtl;
  int M, N;
  if (argc < 2) {
    M = 10;
    N = 10;
  } else {
    M = atoi(argv[1]);
    N = atoi(argv[2]);
  }
  typedef matrix<double>::type Matrix;
  Matrix A(M, N);
  print_banded_views(A);
  return 0;
}

Definition

matrix.h

Template Parameters

Parameter	Description	Default
`Matrix`	The type of the Matrix to be viewed, must be dense
`Uplo`	Whether to view the upper or lower triangle of the matrix

Model of

Members

Member	Where defined	Description
`Sparsity`
`enum { Sparsity_id = Sparsity::id }`
`type`		The generated type

New members

Notes

See also