1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
#include "packbits-read.hpp"
#include "compat/assert.hpp"
#include "compat/exception.hpp"
namespace floormat {
using namespace floormat::Pack_impl;
namespace {
static_assert(sum<1, 2, 3, 4, 5> == 6*(6-1)/2);
static_assert(sum<5, 10, 15> == 30);
using u32 = uint32_t;
using u16 = uint16_t;
using u8 = uint8_t;
template<std::unsigned_integral T, size_t N> constexpr inline T lowbits = N == sizeof(T)*8 ? (T)-1 : (T{1} << N)-T{1};
static_assert(!input<uint32_t, 3>{65535}.check_zero());
static_assert(input<uint32_t, 30>{65535}.advance<16>() == 0);
static_assert(input<uint32_t, 30>::next<16>{ input<uint32_t, 30>{65535}.advance<16>() }.check_zero());
static_assert(input<uint32_t, 30>::next<16>{}.Left == 14);
constexpr bool test1()
{
constexpr size_t bits[] = { 5, 2, 1 };
constexpr size_t vals[] = { 8, 3, 1, 0 };
constexpr auto S0 = input<uint8_t, vals[0]>{0b10111011};
constexpr auto S1 = input<uint8_t, vals[1]>{0b00000101};
constexpr auto S2 = input<uint8_t, vals[2]>{0b00000001};
constexpr auto S3 = input<uint8_t, vals[3]>{0b00000000};
using P0 = std::decay_t<decltype(S0)>;
using P1 = P0::next<bits[0]>;
using P2 = P1::next<bits[1]>;
using P3 = P2::next<bits[2]>;
static_assert(std::is_same_v<P0, input<uint8_t, vals[0]>>);
static_assert(std::is_same_v<P1, input<uint8_t, vals[1]>>);
static_assert(std::is_same_v<P2, input<uint8_t, vals[2]>>);
static_assert(std::is_same_v<P3, input<uint8_t, vals[3]>>);
static_assert(S0.advance< 0>() == S0.value);
static_assert(S0.advance<bits[0]>() == S1.value);
static_assert(S1.advance<bits[1]>() == S2.value);
static_assert(S2.advance<bits[2]>() == S3.value);
static_assert(S0.get<bits[0]>() == (S0.value & (1<<bits[0])-1));
static_assert(S1.get<bits[1]>() == (S1.value & (1<<bits[1])-1));
static_assert(S2.get<bits[2]>() == (S2.value & (1<<bits[2])-1));
static_assert(S3.check_zero());
return true;
}
static_assert(test1());
constexpr bool test3()
{
constexpr auto S0 = input<uint16_t, 16>{0b1110100110001011};
constexpr auto S1 = input<uint16_t, 4>{0b1110};
constexpr auto S2 = input<uint16_t, 1>{0b1};
static_assert(S0.get<12>() == 0b100110001011);
static_assert(S0.advance<12>() == S1.value);
static_assert(S1.get<3>() == 0b110);
static_assert(S1.advance<3>() == S2.value);
static_assert(S2.get<1>() == 0b1);
static_assert(S2.advance<1>() == 0);
return true;
}
static_assert(test3());
template<size_t N> using f32 = input_field<uint32_t, N>;
template<size_t N> using f8 = input_field<uint8_t, N>;
constexpr bool test4()
{
{
static_assert(lowbits<uint32_t, 17> == 0x1ffffU);
//auto tuple = std::tuple<f32<17>&, f32<14>&, f32<1>&>{a, b, c};
f32<17> a; f32<14> b; f32< 1> c;
auto tuple = std::tie(a, b, c);
read_(tuple, input<uint32_t, 32>{(uint32_t)-1}, std::make_index_sequence<3>{});
fm_assert(a == lowbits<uint32_t, 17>);
fm_assert(b == lowbits<uint32_t, 14>);
fm_assert(c & 1);
}
{
f8<1> a;
f8<3> b;
f8<2> c;
read_(std::tie(a, b, c), input<uint8_t, 8>{0b101011}, std::make_index_sequence<3>{});
fm_assert(a == 0b1);
fm_assert(b == 0b101);
fm_assert(c == 0b10);
}
{
read_(std::tuple<>{}, input<uint8_t, 8>{0}, std::index_sequence<>{});
//f32<2> a, b, c;
//read_(std::tuple<>{}, input<uint8_t, 8>{1}, std::index_sequence<>{});
//read_(std::tie(a, b, c), input<uint8_t, 5>{0b11111}, std::make_index_sequence<3>{});
//(void)input<uint8_t, 9>{};
//read_(std::tie(a), input<uint8_t, 8>{3}, std::index_sequence<0>{}); fm_assert(a == 3);
//f8<1> d; read_(std::tie(d), input<uint8_t, 8>{1}, std::index_sequence<>{});
}
{
f8<1> a; f8<3> b; f8<2> c;
pack_read(std::tie(a, b, c), uint8_t{0b101011});
fm_assert(a == 0b1);
fm_assert(b == 0b101);
fm_assert(c == 0b10);
}
return true;
}
static_assert(test4());
} // namespace
} // namespace floormat
|
