feat(nonlinear-static-newton-raphson): step 11 - equilibrium-projection-and-reference-gate

src/fesa/analysis/nonlinear_static_control.cpp

@@ -219,25 +219,25 @@ NewtonChannelDecision EvaluateResidualChannel(
   const double numerator = InfinityNorm(input.free_residual, is_finite);
   const double internal = InfinityNorm(input.free_internal, is_finite);
   const double external = InfinityNorm(input.free_external, is_finite);
-  const double denominator = (std::max)(internal, external);
   if (!is_finite) {
     return {input.identity,
             numerator,
-            denominator,
+            external,
             NewtonConvergenceBranch::kZeroScale,
             kNewtonZeroScaleThreshold,
             unit,
             false};
   }
-  if (denominator == 0.0) {
+  if (external == 0.0) {
     return {input.identity,
             numerator,
-            denominator,
+            external,
             NewtonConvergenceBranch::kZeroScale,
             kNewtonZeroScaleThreshold,
             unit,
             numerator <= kNewtonZeroScaleThreshold};
   }
+  const double denominator = (std::max)(internal, external);
   return {input.identity,
           numerator,
           denominator,