From a64a253794ac64cb40befee54db53bde17dd0d49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Nov 2018 13:19:29 +0100 Subject: New upstream version 1.11.0+dfsg Signed-off-by: Daniel Baumann --- web/api/queries/max/max.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 web/api/queries/max/max.c (limited to 'web/api/queries/max/max.c') diff --git a/web/api/queries/max/max.c b/web/api/queries/max/max.c new file mode 100644 index 000000000..a4be36add --- /dev/null +++ b/web/api/queries/max/max.c @@ -0,0 +1,60 @@ +// 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; +} + -- cgit v1.2.3