Features

THIS PAGE IS WORK IN PROGRESS (COMMENTS AND CONTRIBUTIONS MORE THAN WELCOME!) WOULD BE GREAT TO COMPARE THE FEATURE LIST WITH OTHER PACKAGES

For comparison with other C++ array containters, see Alternatives

Major features:

• Header-only multi-dimensional (up to 11) matrix/array/tensor containers

#include <blitz/array.h>

int main()
{
  blitz::Array<int, 1> intvec(10);
  blitz::Array<bool, 2> binmtx(10,10);
  blitz::Array<double, 3> dblarr(32,64,128);
  blitz::Array<float, 11> ftensor(3,3,3,3,3,3,3,3,3,3,3);
}

$ g++ example.cpp
$ ./a.out 

• Initialisation:

#include <blitz/array.h>

int main()
{
  blitz::Array<double,2> a(2,2), b(4,4);
  a = 0;
  b = 1, 0, 0, 0,
      0, 1, 0, 0,
      0, 0, 1, 0,
      0, 0, 0, 1;
  std::cout << a << b;
}

$ g++ example.cpp
$ ./a.out

(0,1) x (0,1)
[ 0 0 
  0 0 ]
(0,3) x (0,3)
[ 1 0 0 0 
  0 1 0 0 
  0 0 1 0 
  0 0 0 2 ]

• Partial evaluation / lack of temporary objects with loop-free array arithmetics:

• Tensor notation:

• Arbitrary ordering including C-style and Fortran-style

• Boundary checks in debug mode

• Multi-dimensional indexing/slicing with ints and Ranges

• Multi-dimensional indexing/slicing with single object (RectDomain) + rationale for overloading

• Operations on externally allocated memory (and dimension-ordering flexibility)

• Reference counting (optionally thread-safe)

• Array-expression-valued functions (incl. reference counting)

• Elemental functions

• Stencils

• Reductions, ternary-like operator

• Random Number Generators

• Vectorization

• Boost.MPI and Boost.serialization support:

• Tau profiler integration: