blob: 59d43b76b3e0b855d2c68e67fc31ffa6551a0c63 (
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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
#include <math.h>
class Ringbuffer
{
public:
Ringbuffer(int size)
{
this->size = size;
idx = 0;
buf = new double[size];
for (int i=0; i<size; i++)
buf[i] = 0;
avg = 0.0;
avg_valid = false;
}
~Ringbuffer()
{
delete [] buf;
}
double get()
{
if (!avg_valid)
{
avg=0.0;
for (int i=0; i<size; i++)
avg += buf[i];
avg/=size;
avg_valid=true;
}
return avg;
}
double front()
{
return buf[idx];
}
void put(double val)
{
buf[idx] = val;
idx = (idx+1) % size;
avg_valid = false;
}
void set(double val)
{
for (int i=0; i<size; i++)
buf[i]=val;
avg = val;
avg_valid=true;
}
void add(double val)
{
for (int i=0; i<size; i++)
buf[i]+=val;
avg += val;
}
private:
double* buf;
int idx;
int size;
double avg;
bool avg_valid;
};
class ModuloRingbuffer
{
private:
Ringbuffer* rb;
double low,upp,span;
public:
ModuloRingbuffer(int size, double low, double upp)
{
rb = new Ringbuffer(size);
this->low=low;
this->upp=upp;
this->span=upp-low;
rb->set(_fixup_range(0.0));
}
~ModuloRingbuffer()
{
delete rb;
}
double _fixup_range(double val)
{
while (val < low) val+=span;
while (val>= upp) val-=span;
return val;
}
double get()
{
return rb->get();
}
void put(double val)
{
val=_fixup_range(val);
// direct way
double dist1 = val - get();
// over borders
double dist2 = dist1 + span;
double dist3 = dist1 - span;
if (fabs(dist1) <= fabs(dist2) && fabs(dist1) <= fabs(dist3))
rb->put(val);
else if (fabs(dist2) <= fabs(dist3))
rb->put(val+span);
else
rb->put(val-span);
while (get() < low) rb->add(span);
while (get()>= upp) rb->add(-span);
}
void set(double val)
{
rb->set(_fixup_range(val));
}
void add(double val)
{
rb->add(val);
while (get() < low) rb->add(span);
while (get()>= upp) rb->add(-span);
}
};
|