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
|
/*
* rtmath.stdlib.cpp
*
* Copyright (c) 2000-2004 by Florian Fischer (florianfischer@gmx.de)
* and Martin Trautmann (martintrautmann@gmx.de)
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/
// rtmath.stdlib.cpp: Random implementation using CStdLib
#ifndef __LRT_MATH_STDLIB__
#define __LRT_MATH_STDLIB__
#include <stdlib.h>
#include <math.h>
#include <sys/timeb.h>
#include "rtmath.h"
namespace lrt {
int Math::rand(int from, int to)
{
if(!randomInit) randomize();
return (int)((float)(to - from + 1) * ::rand() / (RAND_MAX+1.0f)) + from;
}
void Math::seed(unsigned long seed)
{
srand(seed);
randomInit = true;
}
void Math::randomize()
{
struct timeb tp;
ftime( &tp );
srand( tp.time );
randomInit = true;
}
double Math::sqrt(double num)
{
return ::sqrt(num);
}
double Math::log10(double num)
{
return ::log10(num);
}
double Math::ln(double num)
{
return ::log(num);
}
double Math::exp(double num)
{
return ::exp(num);
}
double Math::sin(double num)
{
return ::sin(num);
}
double Math::cos(double num)
{
return ::cos(num);
}
double Math::tan(double num)
{
return ::tan(num);
}
} // namespace
#endif
|
