diff options
Diffstat (limited to 'src/web/api/queries/stddev/stddev.c')
| -rw-r--r-- | src/web/api/queries/stddev/stddev.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/web/api/queries/stddev/stddev.c b/src/web/api/queries/stddev/stddev.c new file mode 100644 index 00000000..8f543119 --- /dev/null +++ b/src/web/api/queries/stddev/stddev.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "stddev.h" + + +// ---------------------------------------------------------------------------- +// stddev + +/* + * Mean = average + * +NETDATA_DOUBLE grouping_flush_mean(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { + struct grouping_stddev *g = (struct grouping_stddev *)r->grouping.grouping_data; + + NETDATA_DOUBLE value; + + if(unlikely(!g->count)) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + else { + value = mean(g); + + if(!isnormal(value)) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + } + + grouping_reset_stddev(r); + + return value; +} + */ + +/* + * It is not advised to use this version of variance directly + * +NETDATA_DOUBLE grouping_flush_variance(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) { + struct grouping_stddev *g = (struct grouping_stddev *)r->grouping.grouping_data; + + NETDATA_DOUBLE value; + + if(unlikely(!g->count)) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + else { + value = variance(g); + + if(!isnormal(value)) { + value = 0.0; + *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY; + } + } + + grouping_reset_stddev(r); + + return value; +} +*/
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