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fix: normalize negative zero on idle circuit power #115

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Merged
cayossarian merged 2 commits into from
Mar 11, 2026
Merged

fix: normalize negative zero on idle circuit power #115

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dce2819
Normalize negative zero on idle circuit power
cayossarian Mar 11, 2026
ca59fbe
Merge branch 'main' into sign_fixes
cayossarian Mar 11, 2026
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6 changes: 6 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [2.2.4] - 03/2026

### Fixed

- **Negative zero on idle circuits** — Circuit power negation (`-raw_power_w`) produced IEEE 754 `-0.0` when the panel reported `0.0` for an idle circuit. The value is now normalized to positive zero after negation.

## [2.2.3] - 03/2026

### Changed
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2 changes: 1 addition & 1 deletion pyproject.toml
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@@ -1,6 +1,6 @@
[project]
name = "span-panel-api"
version = "2.2.3"
version = "2.2.4"
description = "A client library for SPAN Panel API"
authors = [
{name = "SpanPanel"}
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2 changes: 1 addition & 1 deletion src/span_panel_api/mqtt/homie.py
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Expand Up @@ -265,7 +265,7 @@ def _build_circuit(self, node_id: str, device_type: str = "circuit", relative_po

# active-power is in watts; negate so positive = consumption
raw_power_w = _parse_float(self._get_prop(node_id, "active-power"))
instant_power_w = -raw_power_w
instant_power_w = -raw_power_w or 0.0

# Energy: exported-energy = consumption (panel exports TO circuit)
consumed_wh = _parse_float(self._get_prop(node_id, "exported-energy"))
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