Description of blocked

blocked		Programmers Guide
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Category:containers

Component type:function

Prototype

template <class Matrix, int BM, int BN> block_view<Matrix, BM, BN>::type blocked(const Matrix& A, blk<BM,BN>) ;

Description

This version of the blocked matrix generator is for statically sized blocks.

 block_view bA = blocked(A);

Note: currently not supported for egcs (internal compiler error).

Definition

matrix.h

Preconditions

Complexity

Example

In blocked_matrix.cc:

  const int M = 4;
  const int N = 4;
  typedef matrix<double,
                 rectangle<>, 
                 dense<>, 
                 column_major >::type Matrix;
  Matrix A(M,N);

  for (int i = 0; i < M; ++i)
    for (int j = 0; j < N; ++j)
      A(i, j) = i * N + j;
  print_all_matrix(A);

  block_view<Matrix,2,2>::type
                     bA = blocked(A, blk<2,2>());
  print_partitioned_matrix(bA);

  block_view<Matrix>::type cA = blocked(A, 2, 2);
  print_partitioned_by_column(cA);

Notes

See also