public FloatConstant addFloat(float value){
  FloatConstant entry=getFloatByValue(value);
  if (entry != null)   return entry;
  entry=new FloatConstant(this,_entries.size(),value);
  addConstant(entry);
  return entry;
}

public FloatConstant addFloat ( float value ) { FloatConstant entry = getFloatByValue ( value ) ; if ( entry != null ) return entry ; entry = new FloatConstant ( this , _entries . size ( ) , value ) ; addConstant ( entry ) ; return entry ; }
adds a float constant .
