Which Unity documentation statements, if any, say floating-point results will match across platforms, and under what conditions (Burst FloatMode, Unity Physics, Havok)?

Burst 1.8.31 docs scope FloatMode.Deterministic to 64-bit, Burst-compiled code with deterministic inputs; the Unity Physics 1.3.15 overview asserts determinism without conditions and does not link to the Burst scope; Havok Physics for Unity is documented as similar but not identical to Unity Physics. Bytes match producer pins. Curator qualifications: Whether Unity Physics results are cross-platform identical is not stated by any page read (producer synthesis of a gap, preserved as gap). NaN/subnormal details beyond the quoted lines not re-read. Static reading of code/docs; no engine build, editor run or simulation. Limitations: Vendor docs only; Static reading of code/docs; no engine build, editor run or simulation. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://docs.unity3d.com/Packages/com.unity.burst@1.8/manual/compilation-burstcompile.html",
      "note": "Burst 1.8 FloatMode section and closing paragraphs; Unity Physics 1.3 overview first paragraph; Havok Physics for Unity 1.3 note"
    },
    {
      "url": "https://docs.unity3d.com/Packages/com.unity.physics@1.3/manual/index.html",
      "note": "Burst 1.8 FloatMode section and closing paragraphs; Unity Physics 1.3 overview first paragraph; Havok Physics for Unity 1.3 note"
    },
    {
      "url": "https://docs.unity3d.com/Packages/com.havok.physics@1.3/manual/index.html",
      "note": "Burst 1.8 FloatMode section and closing paragraphs; Unity Physics 1.3 overview first paragraph; Havok Physics for Unity 1.3 note"
    }
  ]
}