Viewing file:  max.c (1.37 KB) -rw-r--r--
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// SPDX-License-Identifier: GPL-3.0-or-later
#include "max.h"
// ----------------------------------------------------------------------------
// max
struct grouping_max {
calculated_number max;
size_t count;
};
void *grouping_create_max(RRDR *r) {
(void)r;
return callocz(1, sizeof(struct grouping_max));
}
// resets when switches dimensions
// so, clear everything to restart
void grouping_reset_max(RRDR *r) {
struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
g->max = 0;
g->count = 0;
}
void grouping_free_max(RRDR *r) {
freez(r->internal.grouping_data);
r->internal.grouping_data = NULL;
}
void grouping_add_max(RRDR *r, calculated_number value) {
if(!isnan(value)) {
struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
if(!g->count || calculated_number_fabs(value) > calculated_number_fabs(g->max)) {
g->max = value;
g->count++;
}
}
}
calculated_number grouping_flush_max(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
struct grouping_max *g = (struct grouping_max *)r->internal.grouping_data;
calculated_number value;
if(unlikely(!g->count)) {
value = 0.0;
*rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
}
else {
value = g->max;
}
g->max = 0.0;
g->count = 0;
return value;
}
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