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dft_tools/doc/reference/c++/arrays/introduction.rst
Olivier Parcollet 2d071bb74b Remove Cython & prepare wrapper for applis.
- removed cython : macro, detection, pxd, etc...
- adapt wrapper tools for external applis.
- cleaned doc for cython
2014-05-30 19:34:13 +02:00

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Rational
===========================
.. highlight:: c
This library provides a multi-dimensionnal array library
for numerical computations with the following characteristics/goals :
* **Simplicity of use** :
Arrays must be as simple to use as in python (numpy) or fortran.
This library is designed to be used by physicists, not by professionnal
programmers. We do *a lot* of array manipulations, and we want to maintain
*readable* codes.
* **Genericity, abstraction and performance** :
We want to have simple, readeable code, with the same (or better) speed than manually written low-level code.
Most optimisations should be delegated to the library and the compiler.
(Some) LAPACK and BLAS operations are interfaced.
* **Complete interoperability with python numpy arrays**.
This library is used a lot with mixed C++/python codes.
It handles quick conversion between the C++ and python world, e.g. :
* work on a view of a numpy,
* create a array in C++, and return it as a numpy.
* mix the various kind of arrays transparently in C++ expressions.
* **HDF5** : simple interface to hdf5 library to ease storing/retrieving into/from HDF5 files.
* **MPI** : compatibility with boost::mpi interface.