blob: 6243606d05161afeb85ddaaaa9d8e461e384f1fc (
plain) (
blame)
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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
#include <assert.h>
#include <math.h>
#define IA 16807
#define IM 2147483647
#define AM (1.0/IM)
#define IQ 127773
#define IR 2836
#define NTAB 32
#define NDIV (1+(IM-1)/NTAB)
#define EPS 1.2e-7
#define RNMX (1.0-EPS)
static long iy=0;
static long iv[NTAB];
static long iseed;
int ABS(int x){
if (x>= 0) return x;
else
return (-x);
}
int sign(int x){
if (x >= 0) return 1;
else
return (-1);
}
int MAX(int x, int y){
if (x>= y) return x;
else
return y;
}
int MIN(int x, int y){
if (x<= y) return x;
else
return y;
}
void randInit(long idum)
{
long j;
long k;
assert (idum <= 0);
assert (iy == 0);
iseed = idum;
if (-(iseed)<1){
iseed = 1;
}
else {
iseed = -(iseed);
}
for (j=NTAB+7; j>=0; j--){
k = (iseed)/IQ;
iseed = IA*(iseed-k*IQ)-IR*k;
if (iseed < 0){
iseed += IM;
}
if (j < NTAB){
iv[j] = iseed;
}
}
iy = iv[0];
}
float randNum()
{
long j;
long k;
float temp;
assert (iy != 0);
k = (iseed)/IQ;
iseed = IA*(iseed-k*IQ)-IR*k;
if (iseed < 0){
iseed += IM;
}
j = iy/NDIV;
iy = iv[j];
iv[j] = iseed;
temp = AM * iy;
if (temp > RNMX){
return RNMX;
}
else {
return temp;
}
}
float randomFloat(float lowest_float, float highest_float)
{
float value;
float range;
assert (lowest_float < highest_float);
range = highest_float - lowest_float;
value = randNum()*(highest_float - lowest_float) + lowest_float;
assert(value >= lowest_float);
assert(value <= highest_float);
return value;
}
float randomNonZeroFloat(float lowest_float, float highest_float, float epsilon)
{
double range;
float value;
assert (lowest_float < 0);
assert (highest_float > 0);
assert (epsilon > 0);
assert ((epsilon < -lowest_float) && (epsilon < highest_float));
range = highest_float - lowest_float;
value = (randNum() * range)+lowest_float;
if (ABS(value) < epsilon)
{
if (value > 0) value = value + epsilon;
else if (value < 0) value = value - epsilon;
}
assert (value >= lowest_float);
assert (value <= highest_float);
return value;
}
unsigned int randomUInt(int lowest_uint, int highest_uint)
{
float range;
unsigned int value;
float temp;
range =(float)(highest_uint - lowest_uint + 1);
temp = randNum();
value =(unsigned int)( floor(temp * range) + lowest_uint);
assert (value >= lowest_uint);
assert (value <= highest_uint);
return value;
}
unsigned int randomNonZeroUInt(int lowest_uint, int highest_uint)
{
float range;
unsigned int value;
float temp;
range =(float)(highest_uint - lowest_uint + 1);
value = 0;
while(value == 0){
temp = randNum();
value =(unsigned int)( floor(temp * range) + lowest_uint);
}
assert (value >= lowest_uint);
assert (value <= highest_uint);
return value;
}
int randInt(int lowest_uint, int highest_uint)
{
float range;
int value;
range = highest_uint - lowest_uint + 1;
value = (int)(floor(randNum() * range) + lowest_uint);
assert (value >= lowest_uint);
assert (value <= highest_uint);
return value;
}
|
