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1.1 root 1: //
2: // nono
3: // Copyright (C) 2025 nono project
4: // Licensed under nono-license.txt
5: //
6:
7: #pragma once
8:
9: #include "header.h"
10:
11: // 時間単位の変換。
12: constexpr uint64 psec_to_nsec(uint64 ps) { return ps / 1000U; }
13: constexpr uint64 psec_to_usec(uint64 ps) { return ps / 1000'000U; }
14: constexpr uint64 psec_to_msec(uint64 ps) { return ps / 1000'000'000U; }
15: constexpr uint64 psec_to_sec( uint64 ps) { return ps / 1000'000'000'000ULL; }
16: constexpr uint64 nsec_to_psec(uint64 ns) { return ns * 1000U; }
17: constexpr uint64 nsec_to_usec(uint64 ns) { return ns / 1000U; }
18: constexpr uint64 nsec_to_msec(uint64 ns) { return ns / 1000'000U; }
19: constexpr uint64 nsec_to_sec( uint64 ns) { return ns / 1000'000'000U; }
20: constexpr uint64 usec_to_psec(uint64 us) { return us * 1000'000U; }
21: constexpr uint64 usec_to_nsec(uint64 us) { return us * 1000U; }
22: constexpr uint64 usec_to_msec(uint64 us) { return us / 1000U; }
23: constexpr uint64 usec_to_sec( uint64 us) { return us / 1000'000U; }
24: constexpr uint64 msec_to_psec(uint64 ms) { return ms * 1000'000'000U; }
25: constexpr uint64 msec_to_nsec(uint64 ms) { return ms * 1000'000U; }
26: constexpr uint64 msec_to_usec(uint64 ms) { return ms * 1000U; }
27: constexpr uint64 msec_to_sec( uint64 ms) { return ms / 1000U; }
28: constexpr uint64 sec_to_psec(uint64 ss) { return ss * 1000'000'000'000ULL; }
29: constexpr uint64 sec_to_nsec(uint64 ss) { return ss * 1000'000'000U; }
30: constexpr uint64 sec_to_usec(uint64 ss) { return ss * 1000'000U; }
31: constexpr uint64 sec_to_msec(uint64 ss) { return ss * 1000U; }
32:
33: // 内部の単位時間は [tsec] と呼ぶ。t は特に意味はないけど tick とか。
34: static constexpr uint64 TSEC_FREQUENCY = 1000'000'000U;
35:
36: static constexpr uint64 PSEC_IN_SEC = 1000'000'000'000ULL;
37: static constexpr uint64 NSEC_IN_SEC = 1000'000'000U;
38: static constexpr uint64 USEC_IN_SEC = 1000'000U;
39: static constexpr uint64 MSEC_IN_SEC = 1000U;
40:
41: constexpr uint64 GCD(uint64 a, uint64 b)
42: {
43: if (a == b) {
44: return a;
45: }
46: if (a < b) {
47: uint64 t = b;
48: b = a;
49: a = t;
50: }
51: uint64 d = 0;
52: do {
53: d = a % b;
54: a = b;
55: b = d;
56: } while (d != 0);
57: return a;
58: }
59:
60: constexpr uint64 tsec_to_xsec(uint64 ts, uint64 base)
61: {
62: auto g = GCD(base, TSEC_FREQUENCY);
63: auto n = base / g;
64: auto d = TSEC_FREQUENCY / g;
65: return ts * n / d;
66: }
67: constexpr uint64 xsec_to_tsec(uint64 xs, uint64 base)
68: {
69: auto g = GCD(base, TSEC_FREQUENCY);
70: auto n = base / g;
71: auto d = TSEC_FREQUENCY / g;
72: return xs * d / n;
73: }
74:
75: constexpr uint64 tsec_to_psec(uint64 ts) {
76: return tsec_to_xsec(ts, PSEC_IN_SEC);
77: }
78: constexpr uint64 tsec_to_nsec(uint64 ts) {
79: return tsec_to_xsec(ts, NSEC_IN_SEC);
80: }
81: constexpr uint64 tsec_to_usec(uint64 ts) {
82: return tsec_to_xsec(ts, USEC_IN_SEC);
83: }
84: constexpr uint64 tsec_to_msec(uint64 ts) {
85: return tsec_to_xsec(ts, MSEC_IN_SEC);
86: }
87: constexpr uint64 tsec_to_sec(uint64 ts) {
88: return tsec_to_xsec(ts, 1);
89: }
90:
91: constexpr uint64 psec_to_tsec(uint64 ps) {
92: return xsec_to_tsec(ps, PSEC_IN_SEC);
93: }
94: constexpr uint64 nsec_to_tsec(uint64 ns) {
95: return xsec_to_tsec(ns, NSEC_IN_SEC);
96: }
97: constexpr uint64 usec_to_tsec(uint64 us) {
98: return xsec_to_tsec(us, USEC_IN_SEC);
99: }
100: constexpr uint64 msec_to_tsec(uint64 ms) {
101: return xsec_to_tsec(ms, MSEC_IN_SEC);
102: }
103: constexpr uint64 sec_to_tsec(uint64 ss) {
104: return xsec_to_tsec(ss, 1);
105: }
106:
107: // ユーザ定義リテラルを使ったサフィックス
108:
109: // 単位時間
110: constexpr uint64 operator"" _tsec(unsigned long long ts)
111: {
112: return ts;
113: }
114: constexpr uint64 operator"" _tsec(long double ts)
115: {
116: return ts;
117: }
118:
119: // ナノ秒
120: constexpr uint64 operator"" _nsec(unsigned long long ns)
121: {
122: return nsec_to_tsec(ns);
123: }
124: constexpr uint64 operator"" _nsec(long double ns)
125: {
126: return ns / 1e9 * TSEC_FREQUENCY;
127: }
128:
129: // マイクロ秒
130: constexpr uint64 operator"" _usec(unsigned long long us)
131: {
132: return us * 1000_nsec;
133: }
134: constexpr uint64 operator"" _usec(long double us)
135: {
136: return us * 1000_nsec;
137: }
138:
139: // ミリ秒
140: constexpr uint64 operator"" _msec(unsigned long long ms)
141: {
142: return ms * 1000_usec;
143: }
144: constexpr uint64 operator"" _msec(long double ms)
145: {
146: return ms * 1000_usec;
147: }
148:
149: // 秒
150: constexpr uint64 operator"" _sec(unsigned long long sec)
151: {
152: return sec * 1000_msec;
153: }
154: constexpr uint64 operator"" _sec(long double sec)
155: {
156: return sec * 1000_msec;
157: }
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