Clock Value Window Membership
Test half-open forward clock-window membership including overnight wrap; equal endpoints denote an empty window.
Description
Test half-open forward clock-window membership including overnight wrap; equal endpoints denote an empty window.
Clock-window membership needs a rule for overnight and equal-endpoint intervals.
When to use this tool
Test half-open forward clock-window membership including overnight wrap; equal endpoints denote an empty window.
- Prepare the supplied value, start, end fields for this operation.
- Compare the complete example with the representation used by your own input before carrying the result into another step.
How to use the tool and how it works
- Enter value, start, end. Use the exact text syntax, units and index conventions explained below.
- Run the tool. If input validation fails, correct the supplied fields before interpreting any result.
- Read result.member. Interpret false, null and empty lists using the distinctions below; they can be valid outputs.
Validate value, start and end as seconds of day. For increasing bounds test start<=value<end; for overnight bounds test value>=start or value<end; equal endpoints return false.1
| Input field | Meaning and representation | Accepted input |
|---|---|---|
| value | value. | Safe integer |
| start | start. | Safe integer |
| end | end. | Safe integer |
| Output field | Interpretation |
|---|---|
| result | Object containing the named outputs below. |
| result.member | Membership flag for the specific set and boundary convention above. |
{
"input": {
"value": 100,
"start": 80000,
"end": 200
},
"output": {
"result": {
"member": true
}
}
}Limitations and assumptions
- The window is half-open and equal endpoints denote empty. No actual date, timezone or leap second is considered.
- Every declared top-level field is required and unexpected fields are rejected. Numeric inputs must be finite; ordinary text fields are bounded to 8,192 UTF-16 code units, with tighter operation-specific limits where stated.
- Lists are limited to 128 entries. JSON text must meet bounded size and depth checks, and numeric outputs beyond the safe finite magnitude are rejected. Exact large integers use decimal strings.
- Indexes are zero-based and spans have an exclusive end unless explicitly stated otherwise. A valid false, null or empty-list result is distinct from malformed input.
Alternative or Complementary methods
Keep elapsed durations, circular clocks, calendar months and epoch offsets distinct. Use a date/time method with explicit timezone and timescale rules for dated instants; arithmetic on one representation does not supply the others.
References
Similar or alternative tools
- Clock Window Day Splitter
Split each ordinary or overnight half-open civil clock window into same-day segments; no time-zone inference.
- Clock Window Union Duration
Merge overlapping civil clock windows after overnight splitting and count covered seconds once on the fixed day.