1#ifndef BOOST_QVM_DETAIL_VEC_REGISTER_IMPL_HPP
2#define BOOST_QVM_DETAIL_VEC_REGISTER_IMPL_HPP
3
4// Copyright 2008-2022 Emil Dotchevski and Reverge Studios, Inc.
5// Copyright 2018 agate-pris
6
7// Distributed under the Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9
10#include <boost/qvm/assert.hpp>
11#include <boost/qvm/config.hpp>
12#include <boost/qvm/static_assert.hpp>
13#include <boost/qvm/vec_traits.hpp>
14
15namespace boost { namespace qvm { namespace qvm_detail {
16
17template<class VecType, class ScalarType, int Dim>
18struct vec_register_common
19{
20 typedef VecType vec_type;
21 typedef ScalarType scalar_type;
22 static int const dim = Dim;
23};
24
25template<class VecType, class ScalarType, int Dim>
26struct vec_register_read
27{
28 template<int I> static ScalarType read_element(VecType const& v);
29
30 template<int I, int N> struct read_element_idx_detail
31 {
32 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL ScalarType impl(int const i, VecType const& v)
33 {
34 return I == i
35 ? read_element<I>(v)
36 : read_element_idx_detail<I + 1, N>::impl(i, v);
37 }
38 };
39
40 template<int N> struct read_element_idx_detail<N, N>
41 {
42 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL ScalarType impl(int, VecType const& v)
43 {
44 BOOST_QVM_ASSERT(0);
45 return read_element<0>(v);
46 }
47 };
48
49 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL ScalarType read_element_idx(int const i, VecType const& v)
50 {
51 return read_element_idx_detail<0, Dim>::impl(i, v);
52 }
53};
54
55template<class VecType, class ScalarType, int Dim>
56struct vec_register_write
57{
58 template<int I> static ScalarType& write_element(VecType& v);
59
60 template<int I, int N> struct write_element_idx_detail
61 {
62 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL ScalarType& impl(int const i, VecType& v)
63 {
64 return I == i
65 ? write_element<I>(v)
66 : write_element_idx_detail<I + 1, N>::impl(i, v);
67 }
68 };
69
70 template<int N> struct write_element_idx_detail<N, N>
71 {
72 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_TRIVIAL ScalarType& impl(int, VecType& v)
73 {
74 BOOST_QVM_ASSERT(0);
75 return write_element<0>(v);
76 }
77 };
78
79 static BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL ScalarType& write_element_idx(int const i, VecType& v)
80 {
81 return write_element_idx_detail<0, Dim>::impl(i, v);
82 }
83};
84
85}}}
86
87#define BOOST_QVM_DETAIL_SPECIALIZE_QVM_DETAIL_VEC_REGISTER_READ(VecType, ScalarType, Dim, I, Read) \
88namespace boost { namespace qvm {namespace qvm_detail{ \
89template<> \
90template<> \
91BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL \
92ScalarType vec_register_read<VecType, ScalarType, Dim>::read_element<I>(VecType const& v) \
93{ \
94 BOOST_QVM_STATIC_ASSERT(I>=0); \
95 BOOST_QVM_STATIC_ASSERT(I<Dim); \
96 return v. Read; \
97} \
98}}}
99
100#define BOOST_QVM_DETAIL_SPECIALIZE_QVM_DETAIL_VEC_REGISTER_WRITE(VecType, ScalarType, Dim, I, Write) \
101namespace boost { namespace qvm {namespace qvm_detail{ \
102template<> \
103template<> \
104BOOST_QVM_CONSTEXPR BOOST_QVM_INLINE_CRITICAL \
105ScalarType& vec_register_write<VecType, ScalarType, Dim>::write_element<I>(VecType& v) \
106{ \
107 BOOST_QVM_STATIC_ASSERT(I>=0); \
108 BOOST_QVM_STATIC_ASSERT(I<Dim); \
109 return v. Write; \
110}; \
111}}}
112
113#define BOOST_QVM_DETAIL_SPECIALIZE_QVM_DETAIL_VEC_REGISTER_READ_WRITE(VecType, ScalarType, Dim, I, Read, Write)\
114BOOST_QVM_DETAIL_SPECIALIZE_QVM_DETAIL_VEC_REGISTER_READ(VecType, ScalarType, Dim, I, Read) \
115BOOST_QVM_DETAIL_SPECIALIZE_QVM_DETAIL_VEC_REGISTER_WRITE(VecType, ScalarType, Dim, I, Write)
116
117#define BOOST_QVM_DETAIL_REGISTER_VEC_SPECIALIZE_VEC_TRAITS_READ(VecType, ScalarType, Dim) \
118namespace boost { namespace qvm { \
119template<> \
120struct vec_traits<VecType> \
121: qvm_detail::vec_register_common<VecType, ScalarType, Dim> \
122, qvm_detail::vec_register_read<VecType, ScalarType, Dim> \
123{ \
124}; \
125}}
126
127#define BOOST_QVM_DETAIL_REGISTER_VEC_SPECIALIZE_VEC_TRAITS_READ_WRITE(VecType, ScalarType, Dim)\
128namespace boost { namespace qvm { \
129template<> \
130struct vec_traits<VecType> \
131: qvm_detail::vec_register_common<VecType, ScalarType, Dim> \
132, qvm_detail::vec_register_read<VecType, ScalarType, Dim> \
133, qvm_detail::vec_register_write<VecType, ScalarType, Dim> \
134{ \
135}; \
136}}
137
138#endif
139

source code of boost/libs/qvm/include/boost/qvm/detail/vec_register_impl.hpp