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Mathematics.h
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1 /* Copyright (c) 2012-2017, ARM Limited and Contributors
2  *
3  * SPDX-License-Identifier: MIT
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14  * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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20 
21 #ifndef MATHEMATICS_H
22 #define MATHEMATICS_H
23 
24 #include "VectorTypes.h"
25 
26 #include <cmath>
27 #include <cstdlib>
33 #ifndef M_PI
34 
37 #define M_PI 3.14159265358979323846f
38 #endif /* M_PI */
39 
40 namespace MaliSDK
41 {
48  inline float distanceBetweenPoints(const Vec2f& point1, const Vec2f& point2)
49  {
50  return sqrtf((point2.x - point1.x) * (point2.x - point1.x) + (point2.y - point1.y) * (point2.y - point1.y));
51  }
52 
58  inline float signum(float f)
59  {
60  if (f > 0.0f)
61  {
62  return 1.0f;
63  }
64 
65  if (f < 0.0f)
66  {
67  return -1.0f;
68  }
69 
70  return 0.0f;
71  }
72 
77  inline float uniformRandomNumber()
78  {
79  return rand() / float(RAND_MAX);
80  }
81 
86  inline float degreesToRadians(float degrees)
87  {
88  return M_PI * degrees / 180.0f;
89  }
90 }
91 #endif /* MATHEMATICS_H */
float uniformRandomNumber()
Generate random number in the 0.0 to 1.0 range.
Definition: Mathematics.h:77
float distanceBetweenPoints(const Vec2f &point1, const Vec2f &point2)
Compute Euclidean 2-dimensional distance between two points on XY plane.
Definition: Mathematics.h:48
float signum(float f)
Get the sign of a number.
Definition: Mathematics.h:58
#define M_PI
The value of pi.
Definition: Mathematics.h:37
GLfloat GLfloat f
Definition: gl2ext.h:2707
float degreesToRadians(float degrees)
Convert an angle in degrees to radians.
Definition: Mathematics.h:86
precision highp float
Definition: hiz_cull.cs:37