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
|
#include <cstdlib>
#include <memory>
#include <cstring>
#if LBFGS_FLOAT == 32 && LBFGS_IEEE_FLOAT
#define fsigndiff(x, y) (((*(uint32_t*)(x)) ^ (*(uint32_t*)(y))) & 0x80000000U)
#else
#define fsigndiff(x, y) (*(x) * (*(y) / fabs(*(y))) < 0.)
#endif/*LBFGS_IEEE_FLOAT*/
inline static void* vecalloc(size_t size)
{
void *memblock = malloc(size);
if (memblock) {
memset(memblock, 0, size);
}
return memblock;
}
inline static void vecfree(void *memblock)
{
free(memblock);
}
inline static void vecset(lbfgsfloatval_t *x, const lbfgsfloatval_t c, const int n)
{
int i;
for (i = 0;i < n;++i) {
x[i] = c;
}
}
inline static void veccpy(lbfgsfloatval_t *y, const lbfgsfloatval_t *x, const int n)
{
int i;
for (i = 0;i < n;++i) {
y[i] = x[i];
}
}
inline static void vecncpy(lbfgsfloatval_t *y, const lbfgsfloatval_t *x, const int n)
{
int i;
for (i = 0;i < n;++i) {
y[i] = -x[i];
}
}
inline static void vecadd(lbfgsfloatval_t *y, const lbfgsfloatval_t *x, const lbfgsfloatval_t c, const int n)
{
int i;
for (i = 0;i < n;++i) {
y[i] += c * x[i];
}
}
inline static void vecdiff(lbfgsfloatval_t *z, const lbfgsfloatval_t *x, const lbfgsfloatval_t *y, const int n)
{
int i;
for (i = 0;i < n;++i) {
z[i] = x[i] - y[i];
}
}
inline static void vecscale(lbfgsfloatval_t *y, const lbfgsfloatval_t c, const int n)
{
int i;
for (i = 0;i < n;++i) {
y[i] *= c;
}
}
inline static void vecmul(lbfgsfloatval_t *y, const lbfgsfloatval_t *x, const int n)
{
int i;
for (i = 0;i < n;++i) {
y[i] *= x[i];
}
}
inline static void vecdot(lbfgsfloatval_t* s, const lbfgsfloatval_t *x, const lbfgsfloatval_t *y, const int n)
{
int i;
*s = 0.;
for (i = 0;i < n;++i) {
*s += x[i] * y[i];
}
}
inline static void vec2norm(lbfgsfloatval_t* s, const lbfgsfloatval_t *x, const int n)
{
vecdot(s, x, x, n);
*s = (lbfgsfloatval_t)sqrt(*s);
}
inline static void vec2norminv(lbfgsfloatval_t* s, const lbfgsfloatval_t *x, const int n)
{
vec2norm(s, x, n);
*s = (lbfgsfloatval_t)(1.0 / *s);
}
|
