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annotate src/main/java/de/intevation/lada/util/data/MathUtil.java @ 1299:0eece233cbae

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Added JSON object type to database dialect.
author Raimund Renkert <raimund.renkert@intevation.de>
date Fri, 24 Feb 2017 14:28:19 +0100
parents c9b84bca3e3d
children
rev   line source
948
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
Tom Gottfried <tom@intevation.de>
parents:
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1 /* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
Tom Gottfried <tom@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=3)
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
Tom Gottfried <tom@intevation.de>
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
Tom Gottfried <tom@intevation.de>
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6 * the documentation coming with IMIS-Labordaten-Application for details.
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
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7 */
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8 package de.intevation.lada.util.data;
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9
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
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10 import java.math.BigDecimal;
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11 import java.math.MathContext;
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12 import java.math.RoundingMode;
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13
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
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14 /**
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15 * Utilities for calculations
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16 *
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17 */
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18 public class MathUtil {
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19
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20 public static final MathContext ROUNDING_CONTEXT = new MathContext(
c9b84bca3e3d Round some values to three digits, breaking ties half to even, before storing.
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21 3, RoundingMode.HALF_EVEN);
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22
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23 public static Double roundDoubleToThree(Double value) {
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24 if (value == null) {
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25 return null;
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26 }
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27 return BigDecimal.valueOf(value).round(ROUNDING_CONTEXT).doubleValue();
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28 }
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29
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30 }
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