blob: 81353928c01362fffdbd4c8868071430668841b1 (
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
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
|
/*
math/functions.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_MATH_FUNCTIONS_H__
#define __INCLUDED_MATH_FUNCTIONS_H__
#include <math.h>
#include <cstdlib>
#include <cmath>
namespace math
{
/**
* @brief return the smallest of two floats
*/
inline const float min(const float a, const float b)
{
return (a < b ? a : b);
}
/**
* @brief return the smallest of two integers
*/
inline const int min(const int a, const int b)
{
return (a < b ? a : b);
}
/**
* @brief return the smallest of two longs
*/
inline const long min(const long a, const long b)
{
return (a < b ? a : b);
}
/**
* @brief return the largest of two floats
*/
inline const float max(const float a, const float b)
{
return (a > b ? a : b);
}
/**
* @brief return the largest of two integers
*/
inline const int max(const int a, const int b)
{
return (a > b ? a : b);
}
/**
* @brief return the largest of two longs
*/
inline const long max(const long a, const long b)
{
return (a > b ? a : b);
}
/// returns a random float
/** The value returned will be in the interval [0-max]
* @param max the maximum value returned
**/
float randomf(const float max = 1.0f);
/// returns a random integer
/** The value returned will be in the interval [0-(max-1)]
* @param max the maximum value returned
**/
unsigned int randomi(const unsigned int max);
/// return the sign of a float value
float sgnf(float value);
/// return an angle in the ]-180,180] range
float degrees180f(float angle);
/// return an angle in the [0,360[ range
float degrees360f(float angle);
/// clamp a float to a specified range
inline void clamp(float &value, const float min = 0.0f, const float max = 1.0f)
{
if (value < min)
value = min;
else if (value > max)
value = max;
}
/// return the absolute value of a float
inline float absf(const float f)
{
return ( f < 0.0f ? -f : f );
}
/// swap two float values
inline void swap(float &x, float &y)
{
float tmp = x;
x = y;
y = tmp;
}
} // namespace math
#endif // __INCLUDED_MATH_FUNCTIONS_H__
|
