mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-14 01:23:53 +00:00
95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
/*
|
|
tests/test_numpy_array.cpp -- test core array functionality
|
|
|
|
Copyright (c) 2016 Ivan Smirnov <i.s.smirnov@gmail.com>
|
|
|
|
All rights reserved. Use of this source code is governed by a
|
|
BSD-style license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
#include "pybind11_tests.h"
|
|
|
|
#include <pybind11/numpy.h>
|
|
#include <pybind11/stl.h>
|
|
|
|
#include <cstdint>
|
|
#include <vector>
|
|
|
|
using arr = py::array;
|
|
using arr_t = py::array_t<uint16_t, 0>;
|
|
|
|
template<typename... Ix> arr data(const arr& a, Ix&&... index) {
|
|
return arr(a.nbytes() - a.offset_at(index...), (const uint8_t *) a.data(index...));
|
|
}
|
|
|
|
template<typename... Ix> arr data_t(const arr_t& a, Ix&&... index) {
|
|
return arr(a.size() - a.index_at(index...), a.data(index...));
|
|
}
|
|
|
|
arr& mutate_data(arr& a) {
|
|
auto ptr = (uint8_t *) a.mutable_data();
|
|
for (size_t i = 0; i < a.nbytes(); i++)
|
|
ptr[i] = (uint8_t) (ptr[i] * 2);
|
|
return a;
|
|
}
|
|
|
|
arr_t& mutate_data_t(arr_t& a) {
|
|
auto ptr = a.mutable_data();
|
|
for (size_t i = 0; i < a.size(); i++)
|
|
ptr[i]++;
|
|
return a;
|
|
}
|
|
|
|
template<typename... Ix> arr& mutate_data(arr& a, Ix&&... index) {
|
|
auto ptr = (uint8_t *) a.mutable_data(index...);
|
|
for (size_t i = 0; i < a.nbytes() - a.offset_at(index...); i++)
|
|
ptr[i] = (uint8_t) (ptr[i] * 2);
|
|
return a;
|
|
}
|
|
|
|
template<typename... Ix> arr_t& mutate_data_t(arr_t& a, Ix&&... index) {
|
|
auto ptr = a.mutable_data(index...);
|
|
for (size_t i = 0; i < a.size() - a.index_at(index...); i++)
|
|
ptr[i]++;
|
|
return a;
|
|
}
|
|
|
|
template<typename... Ix> size_t index_at(const arr& a, Ix&&... idx) { return a.index_at(idx...); }
|
|
template<typename... Ix> size_t index_at_t(const arr_t& a, Ix&&... idx) { return a.index_at(idx...); }
|
|
template<typename... Ix> size_t offset_at(const arr& a, Ix&&... idx) { return a.offset_at(idx...); }
|
|
template<typename... Ix> size_t offset_at_t(const arr_t& a, Ix&&... idx) { return a.offset_at(idx...); }
|
|
template<typename... Ix> size_t at_t(const arr_t& a, Ix&&... idx) { return a.at(idx...); }
|
|
template<typename... Ix> arr_t& mutate_at_t(arr_t& a, Ix&&... idx) { a.mutable_at(idx...)++; return a; }
|
|
|
|
#define def_index_fn(name, type) \
|
|
sm.def(#name, [](type a) { return name(a); }); \
|
|
sm.def(#name, [](type a, int i) { return name(a, i); }); \
|
|
sm.def(#name, [](type a, int i, int j) { return name(a, i, j); }); \
|
|
sm.def(#name, [](type a, int i, int j, int k) { return name(a, i, j, k); });
|
|
|
|
test_initializer numpy_array([](py::module &m) {
|
|
auto sm = m.def_submodule("array");
|
|
|
|
sm.def("ndim", [](const arr& a) { return a.ndim(); });
|
|
sm.def("shape", [](const arr& a) { return arr(a.ndim(), a.shape()); });
|
|
sm.def("shape", [](const arr& a, size_t dim) { return a.shape(dim); });
|
|
sm.def("strides", [](const arr& a) { return arr(a.ndim(), a.strides()); });
|
|
sm.def("strides", [](const arr& a, size_t dim) { return a.strides(dim); });
|
|
sm.def("writeable", [](const arr& a) { return a.writeable(); });
|
|
sm.def("size", [](const arr& a) { return a.size(); });
|
|
sm.def("itemsize", [](const arr& a) { return a.itemsize(); });
|
|
sm.def("nbytes", [](const arr& a) { return a.nbytes(); });
|
|
sm.def("owndata", [](const arr& a) { return a.owndata(); });
|
|
|
|
def_index_fn(data, const arr&);
|
|
def_index_fn(data_t, const arr_t&);
|
|
def_index_fn(index_at, const arr&);
|
|
def_index_fn(index_at_t, const arr_t&);
|
|
def_index_fn(offset_at, const arr&);
|
|
def_index_fn(offset_at_t, const arr_t&);
|
|
def_index_fn(mutate_data, arr&);
|
|
def_index_fn(mutate_data_t, arr_t&);
|
|
def_index_fn(at_t, const arr_t&);
|
|
def_index_fn(mutate_at_t, arr_t&);
|
|
});
|