Source: https://guthlabs.ai/docs/instruments/data-structure-memory-footprint-estimator/implementation/

instrument implementation / implementation-contract

# Data Structure Memory Footprint Estimator implementation

A source-bound implementation contract for Data Structure Memory Footprint Estimator; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t5-150

**Effect**: Computation or source lookup only

## Input and validation requirements

A zero-sized element makes the overhead percentage undefined through division by zero, and the unspecified unit convention for element_size can change the result substantially.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "structure_type": "array",
    "element_count": 1000,
    "element_size_bytes": 8,
    "pointer_width": "64-bit"
  },
  "expected_outputs": {
    "estimated_total_memory_bytes": 8000,
    "overhead_percentage": 0
  },
  "working": "Raw data = n × element_size = 1000 × 8 = 8000 bytes. Array total = n × element_size = 1000 × 8 = 8000 bytes. Overhead = 8000 - 8000 = 0 bytes. Overhead percentage = 0 / 8000 × 100 = 0%."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/data-structure-memory-footprint-estimator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/data-structure-memory-footprint-estimator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/data-structure-memory-footprint-estimator/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche5/tranche5-results.json`