Description
Return stream=globalIndex%streams and sourceIndex=floor(globalIndex/streams) for nonnegative integer global index and positive stream count.
A sequence rule specifies an index origin, state order, and relation among terms. Advancing one step, mapping an index, and checking a local residual answer different questions. Supplied coefficients or periods define a model; they do not establish that observations follow it.
Return stream=globalIndex%streams and sourceIndex=floor(globalIndex/streams) for nonnegative integer global index and positive stream count.
When to use this tool
Use Periodic Interleaving Phase Source Index when you need this particular index map, recurrence step, count, or local algebraic term under supplied sequence conventions.
How to use the tool and how it works
- Enter globalIndex, streams. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read stream, sourceIndex. Use the output convention below.
Return stream=globalIndex%streams and sourceIndex=floor(globalIndex/streams) for nonnegative integer global index and positive stream count.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| globalIndex | Global Index | Required. Safe integer; minimum 0. |
| streams | Streams | Required. Safe integer; minimum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| stream | Stream | Required. Safe integer. |
| sourceIndex | Source Index | Required. Safe integer. |
{
"input": {
"globalIndex": 11,
"streams": 3
},
"output": {
"stream": 2,
"sourceIndex": 3
}
}Limitations and assumptions
- This assumes round-robin interleaving beginning with stream zero. It does not inspect stream lengths, handle skipped sources, or transform sequence data.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Signed zero is exported as zero.
Alternative or Complementary methods
Choose exact integer arithmetic when the index or coefficient range requires it. A complete sequence analysis needs actual terms and a consistent index and state-order convention beyond one local step.
References
Similar or alternative tools
- Sequence: Periodic Index Quotient Remainder
Decompose a signed sequence index into floor quotient and nonnegative within-period phase, retaining negative cycle numbers.
- Periodic Sample Phase Boundary Token
Return phase as nonnegative index modulo positive integer period, cycle=floor(index/period), and boundary when phase is zero.