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treat NaN floats as zero

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root 2024-12-01 16:54:15 +00:00
parent 7a8a2ce030
commit 0393e6663a
1 changed files with 15 additions and 7 deletions
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22
internal/meshtastic/node.go
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@ -12,6 +12,14 @@ const (
NeighborLimit = 100 NeighborLimit = 100
) )
func cleanFloat(f float32) float32 {
if f != f {
// IEEE 754 says that only NaNs satisfy f != f
return 0
}
return f
}
type NeighborInfo struct { type NeighborInfo struct {
Snr float32 `json:"snr,omitempty"` Snr float32 `json:"snr,omitempty"`
Updated int64 `json:"updated"` Updated int64 `json:"updated"`
@ -148,17 +156,17 @@ func (node *Node) Prune(seenByTtl, neighborTtl, metricsTtl, mapReportTtl int64)
func (node *Node) UpdateDeviceMetrics(batteryLevel uint32, voltage, chUtil, airUtilTx float32, uptime uint32) { func (node *Node) UpdateDeviceMetrics(batteryLevel uint32, voltage, chUtil, airUtilTx float32, uptime uint32) {
node.BatteryLevel = batteryLevel node.BatteryLevel = batteryLevel
node.Voltage = voltage node.Voltage = cleanFloat(voltage)
node.ChUtil = chUtil node.ChUtil = cleanFloat(chUtil)
node.AirUtilTx = airUtilTx node.AirUtilTx = cleanFloat(airUtilTx)
node.Uptime = uptime node.Uptime = uptime
node.LastDeviceMetrics = time.Now().Unix() node.LastDeviceMetrics = time.Now().Unix()
} }
func (node *Node) UpdateEnvironmentMetrics(temperature, relativeHumidity, barometricPressure float32) { func (node *Node) UpdateEnvironmentMetrics(temperature, relativeHumidity, barometricPressure float32) {
node.Temperature = temperature node.Temperature = cleanFloat(temperature)
node.RelativeHumidity = relativeHumidity node.RelativeHumidity = cleanFloat(relativeHumidity)
node.BarometricPressure = barometricPressure node.BarometricPressure = cleanFloat(barometricPressure)
node.LastEnvironmentMetrics = time.Now().Unix() node.LastEnvironmentMetrics = time.Now().Unix()
} }
@ -176,7 +184,7 @@ func (node *Node) UpdateNeighborInfo(neighborNum uint32, snr float32) {
node.Neighbors = make(map[uint32]*NeighborInfo) node.Neighbors = make(map[uint32]*NeighborInfo)
} }
node.Neighbors[neighborNum] = &NeighborInfo{ node.Neighbors[neighborNum] = &NeighborInfo{
Snr: snr, Snr: cleanFloat(snr),
Updated: time.Now().Unix(), Updated: time.Now().Unix(),
} }
} }