There are two popular variants of the Holt-Winters forecasting method; RRDtool

[rrdtool.git] / src / rrd_hw_update.h

diff --git a/src/rrd_hw_update.h b/src/rrd_hw_update.h
new file mode 100644 (file)
index 0000000..e59e2db
--- /dev/null
+++ b/src/rrd_hw_update.h
@@ -0,0 +1,44 @@
+/*****************************************************************************
+ * rrd_hw_update.h  Functions for updating a Holt-Winters RRA
+ ****************************************************************************/
+
+int       update_hwpredict(
+    rrd_t *rrd,
+    unsigned long cdp_idx,
+    unsigned long rra_idx,
+    unsigned long ds_idx,
+    unsigned short CDP_scratch_idx,
+    hw_functions_t * functions);
+
+int       update_seasonal(
+    rrd_t *rrd,
+    unsigned long cdp_idx,
+    unsigned long rra_idx,
+    unsigned long ds_idx,
+    unsigned short CDP_scratch_idx,
+    rrd_value_t *seasonal_coef,
+    hw_functions_t * functions);
+
+int       update_devpredict(
+    rrd_t *rrd,
+    unsigned long cdp_idx,
+    unsigned long rra_idx,
+    unsigned long ds_idx,
+    unsigned short CDP_scratch_idx);
+
+int       update_devseasonal(
+    rrd_t *rrd,
+    unsigned long cdp_idx,
+    unsigned long rra_idx,
+    unsigned long ds_idx,
+    unsigned short CDP_scratch_idx,
+    rrd_value_t *seasonal_dev,
+    hw_functions_t * functions);
+
+int       update_failures(
+    rrd_t *rrd,
+    unsigned long cdp_idx,
+    unsigned long rra_idx,
+    unsigned long ds_idx,
+    unsigned short CDP_scratch_idx,
+    hw_functions_t * functions);