/// <summary>
        /// we fake a float test using int2float conversion of NumericUtils </summary>
        private void TestFloatRange(int precisionStep)
        {
            string    field = "ascfield" + precisionStep;
            const int lower = -1000, upper = +2000;

            Query   tq       = NumericRangeQuery.NewFloatRange(field, precisionStep, NumericUtils.SortableIntToFloat(lower), NumericUtils.SortableIntToFloat(upper), true, true);
            TopDocs tTopDocs = Searcher.Search(tq, 1);

            Assert.AreEqual(upper - lower + 1, tTopDocs.TotalHits, "Returned count of range query must be equal to inclusive range length");

            Filter tf = NumericRangeFilter.NewFloatRange(field, precisionStep, NumericUtils.SortableIntToFloat(lower), NumericUtils.SortableIntToFloat(upper), true, true);

            tTopDocs = Searcher.Search(new MatchAllDocsQuery(), tf, 1);
            Assert.AreEqual(upper - lower + 1, tTopDocs.TotalHits, "Returned count of range filter must be equal to inclusive range length");
        }
        /// <summary>we fake a float test using int2float conversion of NumericUtils </summary>
        private void  TestFloatRange(int precisionStep)
        {
            System.String field = "ascfield" + precisionStep;
            int           lower = -1000;
            int           upper = +2000;

            System.Single tempAux  = (float)NumericUtils.SortableIntToFloat(lower);
            System.Single tempAux2 = (float)NumericUtils.SortableIntToFloat(upper);
            Query         tq       = NumericRangeQuery.NewFloatRange(field, precisionStep, tempAux, tempAux2, true, true);
            TopDocs       tTopDocs = searcher.Search(tq, 1, null);

            Assert.AreEqual(upper - lower + 1, tTopDocs.TotalHits, "Returned count of range query must be equal to inclusive range length");

            System.Single tempAux3 = (float)NumericUtils.SortableIntToFloat(lower);
            System.Single tempAux4 = (float)NumericUtils.SortableIntToFloat(upper);
            Filter        tf       = NumericRangeFilter.NewFloatRange(field, precisionStep, tempAux3, tempAux4, true, true);

            tTopDocs = searcher.Search((Query) new MatchAllDocsQuery(), tf, (int)1, (IState)null);
            Assert.AreEqual(upper - lower + 1, tTopDocs.TotalHits, "Returned count of range filter must be equal to inclusive range length");
        }