mirror of
https://github.com/matrix-org/matrix-spec
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a8d8990646
Signed-off-by: Kierre Sametti vel@riseup.net Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
42 lines
1.3 KiB
Markdown
42 lines
1.3 KiB
Markdown
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##### `m.room.power_levels` events accept values as floats
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When the value is a float
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* First, exponential notation is applied: `5.114698E4` becomes `51146.98`
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* Second, the value is truncated at the decimal point: `51146.98` becomes `51146`.
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Values outside the range represented by IEE754 binary64 (a "double") cause the
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powerlevel event to be rejected, as do `Infinity`, `-Infinity` and `NaN`.
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For example, this is a valid `m.room.power_levels` event in this room version:
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```json
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{
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"content": {
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"ban": 50,
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"events": {
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"m.room.power_levels": 100
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},
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"events_default": 0,
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"state_default": 50,
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"users": {
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"@example:example.org": 100,
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"@alice:localhost": 50,
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"@bob:localhost": 50.57
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},
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"users_default": 0
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},
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"origin_server_ts": 1432735824653,
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"room_id": "!jEsUZKDJdhlrceRyVU:example.org",
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"sender": "@example:example.org",
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"state_key": "",
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"type": "m.room.power_levels"
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}
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```
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In this example, both `@bob:localhost` and `@alice:localhost` have the same effective
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power level of `50`, even though the values are technically different.
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Note that, since this room version does not enforce that events comply with the requirements
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of [Canonical JSON](/appendices#canonical-json), power levels can be formatted as floats.
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