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| static int | wrap_day (int minutes) |
| | Bring any minute count into 0..1439, counting backwards from midnight for a negative one.
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| static int | floor_minutes (int seconds) |
| | Whole minutes in a second count, rounding down so a part minute before the window still counts as the minute it started in.
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| static int | ceil_minutes (int seconds) |
| | Whole minutes in a second count, rounding up so a span ending part way through a minute still covers it.
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TimeBand | timeband_full_day (void) |
| | A window running midnight to midnight.
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| TimeBand | timeband_rolling (int now_min, int span_min, int lead_min) |
| | A window that puts a given moment a fixed way into it.
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| TimeBand | timeband_from_hour (int base_hour, int span_min) |
| | A window starting at the top of a given hour.
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| int | timeband_offset (TimeBand band, int minute_of_day) |
| | How far into the window a minute of the day falls.
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| int | timeband_pos (TimeBand band, int length, int minute_of_day) |
| | Where a minute of the day lands along an axis of a given length.
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| int | timeband_pos_offset (TimeBand band, int length, int offset_min) |
| | The same mapping for a value already measured from the window's start.
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| bool | timeband_clip (TimeBand band, time_t window_epoch, time_t start, time_t end, TimeBandSpan *out) |
| | Clip an absolute span onto the window.
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| int | timeband_clip_daily (TimeBand band, int from_min, int to_min, TimeBandSpan *out, int max_out) |
| | Clip a daily span, one that repeats every day like the daylight, onto the window.
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| time_t | timeband_window_epoch (TimeBand band, time_t now, int now_min) |
| | The epoch the window's first minute sits at.
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The window sums: build one, place a moment on it, and clip a span to it.
1.18.0