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-rw-r--r--web/api/queries/sum/sum.h15
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diff --git a/web/api/queries/sum/sum.h b/web/api/queries/sum/sum.h
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+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_QUERY_SUM_H
+#define NETDATA_API_QUERY_SUM_H
+
+#include "../query.h"
+#include "../rrdr.h"
+
+extern void *grouping_create_sum(RRDR *r);
+extern void grouping_reset_sum(RRDR *r);
+extern void grouping_free_sum(RRDR *r);
+extern void grouping_add_sum(RRDR *r, calculated_number value);
+extern calculated_number grouping_flush_sum(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr);
+
+#endif //NETDATA_API_QUERY_SUM_H