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
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "value.h"
inline calculated_number rrdr2value(RRDR *r, long i, RRDR_OPTIONS options, int *all_values_are_null, RRDDIM *temp_rd) {
if (r->st_needs_lock)
rrdset_check_rdlock(r->st);
long c;
RRDDIM *d;
calculated_number *cn = &r->v[ i * r->d ];
RRDR_VALUE_FLAGS *co = &r->o[ i * r->d ];
calculated_number sum = 0, min = 0, max = 0, v;
int all_null = 1, init = 1;
calculated_number total = 1;
int set_min_max = 0;
if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
total = 0;
for (c = 0, d = temp_rd ? temp_rd : r->st->dimensions; d && c < r->d; c++, d = d->next) {
calculated_number n = cn[c];
if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
n = -n;
total += n;
}
// prevent a division by zero
if(total == 0) total = 1;
set_min_max = 1;
}
// for each dimension
for (c = 0, d = temp_rd ? temp_rd : r->st->dimensions; d && c < r->d; c++, d = d->next) {
if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
calculated_number n = cn[c];
if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
n = -n;
if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
n = n * 100 / total;
if(unlikely(set_min_max)) {
r->min = r->max = n;
set_min_max = 0;
}
if(n < r->min) r->min = n;
if(n > r->max) r->max = n;
}
if(unlikely(init)) {
if(n > 0) {
min = 0;
max = n;
}
else {
min = n;
max = 0;
}
init = 0;
}
if(likely(!(co[c] & RRDR_VALUE_EMPTY))) {
all_null = 0;
sum += n;
}
if(n < min) min = n;
if(n > max) max = n;
}
if(unlikely(all_null)) {
if(likely(all_values_are_null))
*all_values_are_null = 1;
return 0;
}
else {
if(likely(all_values_are_null))
*all_values_are_null = 0;
}
if(options & RRDR_OPTION_MIN2MAX)
v = max - min;
else
v = sum;
return v;
}
|
