blob: f8afe77b98b3820cd25acca142431a05fa5b1be8 (
plain)
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
|
#pragma once
#include <algorithm>
#include <cmath>
#include <cstdint>
#include <sstream>
constexpr int64_t DIPHA_MAGIC = 8067171840;
constexpr int64_t DIPHA_DISTANCE_MATRIX = 7;
constexpr int64_t DIPHA_PERSISTENCE_DIAGRAM = 2;
constexpr int64_t DIPHA_WEIGHTED_BOUNDARY_MATRIX = 0;
inline constexpr double PI = 4*std::atan(1);
template <typename T> inline void reverse_endianness(T & x)
{
uint8_t * p = reinterpret_cast<uint8_t *>(&x);
std::reverse(p, p + sizeof(T));
}
template <typename T> inline T read_le(std::istream & s)
{
T result;
s.read(reinterpret_cast<char *>(&result), sizeof(T));
#ifdef BIGENDIAN
reverse_endianness(result);
#endif
return result;
}
template <typename T> inline void write_le(std::ostream & s, T value)
{
#ifdef BIGENDIAN
reverse_endianness(value);
#endif
s.write(reinterpret_cast<char *>(&value), sizeof(T));
}
template <typename T> inline T read_be(std::istream & s)
{
T result;
s.read(reinterpret_cast<char *>(&result), sizeof(T));
#ifndef BIGENDIAN
reverse_endianness(result);
#endif
return result;
}
template <typename T> inline void write_be(std::ostream & s, T value)
{
#ifndef BIGENDIAN
reverse_endianness(value);
#endif
s.write(reinterpret_cast<char *>(&value), sizeof(T));
}
enum class Message_tag : int { result, work };
template <typename T> inline T unroll_upper_tri(T n, T i, T j)
{
return i*(n-1) - ((i-1)*i)/2 + j;
}
template <typename T> inline T unroll_full(T n, T i, T j)
{
return i*n + j;
}
|
