001package ca.uhn.fhir.util;
002
003/*-
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2023 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import org.apache.commons.lang3.tuple.Pair;
024
025import java.math.BigDecimal;
026
027public class NumericParamRangeUtil {
028
029        private NumericParamRangeUtil() {}
030
031        /**
032         * Provides a Pair containing the low and high boundaries for a range based on the received number
033         * characteristics. Note that the scale is used to calculate significant figures
034         * @param theNumber the number which range is returned
035         * @return a Pair of BigDecimal(s) with the low and high range boundaries
036         */
037        public static Pair<BigDecimal, BigDecimal> getRange(BigDecimal theNumber) {
038                BigDecimal halfRange = BigDecimal.valueOf(.5).movePointLeft( theNumber.scale() );
039                return Pair.of(theNumber.subtract(halfRange), theNumber.add(halfRange));
040        }
041
042
043}