-- Reproduction axiom trail -- re-derived from source (TOOLCHAIN tier).
-- theorem : ekf_range_nonneg
-- source  : eml-stdlib/eml_stdlib/control/ekf_range_bearing.eml  ->  eml-compile --target lean
-- tool    : forge c478933 . machlib d6d130a1 . lean via lake
-- when    : 2026-07-27T07:09:17Z
-- verdict : CLEAN -- footprint free of sorry- and classical-citation axioms
-- forbid  : sorryAx, Classical.choice
-- (re-derive: make verify-proof)
--
'ekf_range_nonneg' depends on axioms: [MachLib.Real,
 MachLib.Real.addR,
 MachLib.Real.leR,
 MachLib.Real.mulR,
 MachLib.Real.sqrt,
 MachLib.Real.sqrt_nonneg,
 MachLib.Real.subR,
 MachLib.Real.zeroR]