Libosmium 2.22.0 Fast and flexible C++ library for working with OpenStreetMap data

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minmax.hpp
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1#ifndef OSMIUM_UTIL_MINMAX_HPP
2#define OSMIUM_UTIL_MINMAX_HPP
3
4/*
5
6 This file is part of Osmium (https://osmcode.org/libosmium).
7
8 Copyright 2013-2025 Jochen Topf <jochen@topf.org> and others (see README).
9
10 Boost Software License - Version 1.0 - August 17th, 2003
11
12 Permission is hereby granted, free of charge, to any person or organization
13 obtaining a copy of the software and accompanying documentation covered by
14 this license (the "Software") to use, reproduce, display, distribute,
15 execute, and transmit the Software, and to prepare derivative works of the
16 Software, and to permit third-parties to whom the Software is furnished to
17 do so, all subject to the following:
18
19 The copyright notices in the Software and this entire statement, including
20 the above license grant, this restriction and the following disclaimer,
21 must be included in all copies of the Software, in whole or in part, and
22 all derivative works of the Software, unless such copies or derivative
23 works are solely in the form of machine-executable object code generated by
24 a source language processor.
25
26 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
29 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
30 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
31 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
32 DEALINGS IN THE SOFTWARE.
33
34*/
35
36#include <limits>
37
38 namespace osmium {
39
40 template <typename T>
41 inline T min_op_start_value() {
42 return std::numeric_limits<T>::max();
43 }
44
56 template <typename T>
57 class min_op {
58
59 T m_value;
60
61 public:
62
63 explicit min_op(T start_value = min_op_start_value<T>()) :
64 m_value(start_value) {
65 }
66
67 void update(T value) noexcept {
68 if (value < m_value) {
69 m_value = value;
70 }
71 }
72
73 T operator()() const noexcept {
74 return m_value;
75 }
76
77 };
78
79 template <typename T>
80 inline T max_op_start_value() {
81 return std::numeric_limits<T>::min();
82 }
83
95 template <typename T>
96 class max_op {
97
98 T m_value;
99
100 public:
101
102 explicit max_op(T start_value = max_op_start_value<T>()) :
103 m_value(start_value) {
104 }
105
106 void update(T value) noexcept {
107 if (value > m_value) {
108 m_value = value;
109 }
110 }
111
112 T operator()() const noexcept {
113 return m_value;
114 }
115
116 };
117
118} // namespace osmium
119
120#endif // OSMIUM_UTIL_MINMAX_HPP
osmium::max_op
Definition minmax.hpp:96
osmium::max_op::update
void update(T value) noexcept
Definition minmax.hpp:106
osmium::max_op::m_value
T m_value
Definition minmax.hpp:98
osmium::max_op::operator()
T operator()() const noexcept
Definition minmax.hpp:112
osmium::max_op::max_op
max_op(T start_value=max_op_start_value< T >())
Definition minmax.hpp:102
osmium::min_op
Definition minmax.hpp:57
osmium::min_op::min_op
min_op(T start_value=min_op_start_value< T >())
Definition minmax.hpp:63
osmium::min_op::operator()
T operator()() const noexcept
Definition minmax.hpp:73
osmium::min_op::update
void update(T value) noexcept
Definition minmax.hpp:67
osmium::min_op::m_value
T m_value
Definition minmax.hpp:59
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::max_op_start_value
T max_op_start_value()
Definition minmax.hpp:80
osmium::min_op_start_value
T min_op_start_value()
Definition minmax.hpp:41