message: [XLA] Clarify a comment regarding complex power when the base is zero
diff: @@ -784,7 +784,7 @@ StatusOr<llvm::Value*> ElementalIrEmitter::EmitComplexPower(
  auto q = FAdd(FMul(c, arg_lhs), FMul(half_d, ln_aa_p_bb));
  TF_ASSIGN_OR_RETURN(auto cos_q, EmitCos(component_type, q));
  TF_ASSIGN_OR_RETURN(auto sin_q, EmitSin(component_type, q));
  - // 0^c is 0 if d is 0 and c > 0. 0^0 is defined to be 1.0, see
  + // d^c is 0 if d is 0 and c > 0. 0^0 is defined to be 1.0, see
  // Branch Cuts for Complex Elementary Functions or Much Ado About
  // Nothing's Sign Bit, W. Kahan, Section 10.
  return Select(
  