Harris-Benedict BMR (legacy) implementation

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

t2-026

Effect

Computation or source lookup only

Input and validation requirements

An extreme but representable JavaScript input produces NaN through Infinity minus Infinity rather than a controlled rejection. The unit probe also shows that omitted units can change the estimate from 2317.120 to 1807.137855 kcal/day.

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": {
    "weight": 70,
    "weight_unit": "kg",
    "height": 175,
    "height_unit": "cm",
    "age": 30,
    "age_unit": "years",
    "sex": "male"
  },
  "expected_outputs": {
    "bmr_kcal_per_day": 1695.667
  },
  "working": "13.397×70 = 937.790; 4.799×175 = 839.825; 5.677×30 = 170.310; 88.362 + 937.790 = 1026.152; 1026.152 + 839.825 = 1865.977; 1865.977 − 170.310 = 1695.667 kcal/day."
}

Other records

Sources and evidence

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

• VERIFIED_LEDGER.json
• evidence-tranche2/tranche2-results.json