| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "stddev.h" |
| 4 | |
| 5 | |
| 6 | // ---------------------------------------------------------------------------- |
| 7 | // stddev |
| 8 | |
| 9 | /* |
| 10 | * Mean = average |
| 11 | * |
| 12 | NETDATA_DOUBLE grouping_flush_mean(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { |
| 13 | struct grouping_stddev *g = (struct grouping_stddev *)r->grouping.grouping_data; |
| 14 | |
| 15 | NETDATA_DOUBLE value; |
| 16 | |
| 17 | if(unlikely(!g->count)) { |
| 18 | value = 0.0; |
| 19 | *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; |
| 20 | } |
| 21 | else { |
| 22 | value = mean(g); |
| 23 | |
| 24 | if(!isnormal(value)) { |
| 25 | value = 0.0; |
| 26 | *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | grouping_reset_stddev(r); |
| 31 | |
| 32 | return value; |
| 33 | } |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * It is not advised to use this version of variance directly |
| 38 | * |
| 39 | NETDATA_DOUBLE grouping_flush_variance(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { |
| 40 | struct grouping_stddev *g = (struct grouping_stddev *)r->grouping.grouping_data; |
| 41 | |
| 42 | NETDATA_DOUBLE value; |
| 43 | |
| 44 | if(unlikely(!g->count)) { |
| 45 | value = 0.0; |
| 46 | *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; |
| 47 | } |
| 48 | else { |
| 49 | value = variance(g); |
| 50 | |
| 51 | if(!isnormal(value)) { |
| 52 | value = 0.0; |
| 53 | *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | grouping_reset_stddev(r); |
| 58 | |
| 59 | return value; |
| 60 | } |
| 61 | */ |