anchor.diff:    static const sNaNmax = 0x7FFFBFFFFFFFFFFF;
     static const maxShortLength = kMaxShortLengthInBytes - sizeInBytes;
     static const maxLongLength = kMaxLongLengthInBytes - sizeInBytes;
  -  static final Float64List emptyList = new Float64List(0);
  + //Flush static final Float64List emptyList = new Float64List(0);
   
     static bool inRange(double val) => (val >= min) && (val <= max);
   
  
positive.code:   static const sNaN = 0x7FC00000;
    static const int maxShortLength = kMaxShortLengthInBytes ~/ sizeInBytes;
    static const int maxLongLength = kMaxLongLengthInBytes ~/ sizeInBytes;
    static final Float32List emptyList = new Float32List(0);
  
    static bool inRange(double val) => (val >= min) && (val <= max);
  
  
negative.code: class Float {
    static String get type => "Float";
  
    static bool inRange(double min, double val, double max) => (min <= val && val <= max);
  
    static double guard(double min, double val, double max) =>
        inRange(min, val, max) ? val : _floatError(type, min, val, max);
  