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
|
template <class T>
__device__ void
swap(T &a, T &b)
{
T tmp = a;
a = b;
b = tmp;
}
template <class T>
__device__ void
reverse(int n, T *a)
{
for (int i=0; i < n/2; i++)
swap(a[i],a[n-1-i]);
}
template <class T>
__device__ void
piksrt(int n, T *arr)
{
int i,j;
T a;
for (j=1; j < n; j++) {
a = arr[j];
i = j-1;
while (i >= 0 && arr[i] > a) {
arr[i+1] = arr[i];
i--;
}
arr[i+1] = a;
}
}
template <class T, class U>
__device__ void
piksrt2(int n, T *arr, U *brr)
{
int i,j;
T a;
U b;
for (j=1; j < n; j++) {
a = arr[j];
b = brr[j];
i = j-1;
while (i >= 0 && arr[i] > a) {
arr[i+1] = arr[i];
brr[i+1] = brr[i];
i--;
}
arr[i+1] = a;
brr[i+1] = b;
}
}
template <class T>
__device__ unsigned long
searchsorted(unsigned long n, T *arr, const T &x)
{
unsigned long ju,jm,jl;
int ascnd;
jl = 0;
ju = n;
ascnd = (arr[n-1] > arr[0]);
while (ju-jl > 1) {
jm = (ju+jl) >> 1;
if (x >= arr[jm] == ascnd)
jl = jm;
else
ju = jm;
}
if (x <= arr[0])
return 0;
else if (x == arr[n-1])
return n-1;
else
return ju;
}
template <class T>
__device__ void
insert(unsigned long n, T *arr, unsigned long i, const T &x)
{
unsigned long j;
for (j=n-1; j > i; j--)
arr[j] = arr[j-1];
arr[i] = x;
}
template <class T>
__device__ void
add_sorted(unsigned long n, T *arr, const T &x)
{
unsigned long i = searchsorted(n, arr, x);
if (i < n)
insert(n, arr, i, x);
}
|
