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ippStsNoErr
The actionable meaning of Intel IPP operation completed without error or warning comes from the component that returned it. A zero IppStatus means the function completed without reporting an IPP warning or error; output validity still depends on the caller supplying the documented buffers and interpreting the selected function correctly.
Where the result is produced
Evidence to preserve
| Capture | Diagnostic value |
|---|---|
| Function, arguments, ROI/length, output checksum, library version, and status captured immediately. | Identifies the concrete object and operation associated with Intel IPP operation completed without error or warning. |
| IppStatus sign and value interpreted using the same IPP headers as the linked library. | Separates argument or lifecycle state from the provider beneath the returned status. |
| Output-buffer state and checksum before and after the call. | Creates a stable before-and-after comparison. |
| Reference result or invariant appropriate to the primitive domain. | Shows whether that result is the first result or a translated summary. |
A controlled diagnostic sequence
- Compare output with a scalar/reference implementation for one deterministic vector.
- Run one boundary input and one known-good control without changing dispatch/library version. Treat a changed result as a new boundary rather than automatic resolution of the failing return.
- Check the status immediately; IPP does not preserve a global last-status value. Repeat the original supported operation so the check remains relevant to the original call.
Correction and proof
Targeted correction. Keep checking every returned IppStatus and validate output separately for application-level correctness.
Acceptance criterion. Representative and boundary inputs return zero only when output matches the documented operation.
Technical references
- Intel: Integrated Performance Primitives product and documentation — defines the status namespace used.
- Intel IPP developer guide — documents the API or lifecycle boundary behind the recorded status.
- Intel IPP error-reporting reference — provides ABI, implementation, or protocol context.
- AllStat source record: Intel ippdefs.h semantics — supports the portability and verification limits.
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