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- // Copyright Jim Bosch & Ankit Daftery 2010-2012.
- // Copyright Stefan Seefeld 2016.
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/python/numpy.hpp>
- namespace p = boost::python;
- namespace np = boost::python::numpy;
- np::ndarray zeros(p::tuple shape, np::dtype dt) { return np::zeros(shape, dt);}
- np::ndarray array2(p::object obj, np::dtype dt) { return np::array(obj,dt);}
- np::ndarray array1(p::object obj) { return np::array(obj);}
- np::ndarray empty1(p::tuple shape, np::dtype dt) { return np::empty(shape,dt);}
- np::ndarray c_empty(p::tuple shape, np::dtype dt)
- {
- // convert 'shape' to a C array so we can test the corresponding
- // version of the constructor
- unsigned len = p::len(shape);
- Py_intptr_t *c_shape = new Py_intptr_t[len];
- for (unsigned i = 0; i != len; ++i)
- c_shape[i] = p::extract<Py_intptr_t>(shape[i]);
- np::ndarray result = np::empty(len, c_shape, dt);
- delete [] c_shape;
- return result;
- }
- np::ndarray transpose(np::ndarray arr) { return arr.transpose();}
- np::ndarray squeeze(np::ndarray arr) { return arr.squeeze();}
- np::ndarray reshape(np::ndarray arr,p::tuple tup) { return arr.reshape(tup);}
- Py_intptr_t shape_index(np::ndarray arr,int k) { return arr.shape(k); }
- Py_intptr_t strides_index(np::ndarray arr,int k) { return arr.strides(k); }
- BOOST_PYTHON_MODULE(ndarray_ext)
- {
- np::initialize();
- p::def("zeros", zeros);
- p::def("zeros_matrix", zeros, np::as_matrix<>());
- p::def("array", array2);
- p::def("array", array1);
- p::def("empty", empty1);
- p::def("c_empty", c_empty);
- p::def("transpose", transpose);
- p::def("squeeze", squeeze);
- p::def("reshape", reshape);
- p::def("shape_index", shape_index);
- p::def("strides_index", strides_index);
- }
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