TRIQS/nda 2.0.0
Multi-dimensional array library for C++
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cross_product.hpp
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1// Copyright (c) 2020--present, The Simons Foundation
2// This file is part of TRIQS/nda and is licensed under the Apache License, Version 2.0.
3// SPDX-License-Identifier: Apache-2.0
4// See LICENSE in the root of this distribution for details.
5
10
11#pragma once
12
13#include "../basic_array.hpp"
14#include "../concepts.hpp"
15#include "../declarations.hpp"
16#include "../macros.hpp"
17#include "../mem/address_space.hpp"
18#include "../mem/policies.hpp"
19
20namespace nda::linalg {
21
37 template <Vector X, Vector Y>
38 requires(nda::mem::have_host_compatible_addr_space<X, Y>)
39 auto cross_product(X const &x, Y const &y) {
40 EXPECTS(x.size() == 3 and y.size() == 3);
41 auto res = vector<decltype(x(0) * y(0)), nda::heap<nda::mem::common_addr_space<X, Y>>>(3);
42 res(0) = x(1) * y(2) - y(1) * x(2);
43 res(1) = -x(0) * y(2) + y(0) * x(2);
44 res(2) = x(0) * y(1) - y(0) * x(1);
45 return res;
46 }
47
48} // namespace nda::linalg
address_space.hpp
Provides definitions and type traits involving the different memory address spaces supported by nda.
basic_array.hpp
Provides the generic class for arrays.
concepts.hpp
Provides concepts for the nda library.
declarations.hpp
Provides various convenient aliases and helper functions for nda::basic_array and nda::basic_array_vi...
nda::vector
basic_array< ValueType, 1, C_layout, 'V', ContainerPolicy > vector
Alias template of an nda::basic_array with rank 1 and a 'V' algebra.
Definition declarations.hpp:145
nda::linalg::cross_product
auto cross_product(X const &x, Y const &y)
Compute the vector cross product.
Definition cross_product.hpp:39
nda::mem::have_host_compatible_addr_space
static constexpr bool have_host_compatible_addr_space
Constexpr variable that is true if all given types have an address space compatible with Host.
Definition address_space.hpp:173
nda::mem::common_addr_space
constexpr AddressSpace common_addr_space
Get common address space for a number of given nda::Array types.
Definition address_space.hpp:111
nda::heap
heap_basic< mem::mallocator< AdrSp > > heap
Alias template of the nda::heap_basic policy using an nda::mem::mallocator.
Definition policies.hpp:52
macros.hpp
Macros used in the nda library.
policies.hpp
Defines various memory handling policies.