1 /* 2 * Copyright (C) 2010 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.clearsilver.jsilver.functions.numeric; 18 19 import com.google.clearsilver.jsilver.functions.NonEscapingFunction; 20 import com.google.clearsilver.jsilver.values.Value; 21 import static com.google.clearsilver.jsilver.values.Value.literalConstant; 22 23 import static java.lang.Math.abs; 24 25 /** 26 * Returns the absolute value of the numeric expressions. 27 */ 28 public class AbsFunction extends NonEscapingFunction { 29 30 /** 31 * @param args Single numeric value 32 * @return Absolute value 33 */ 34 public Value execute(Value... args) { 35 Value arg = args[0]; 36 return literalConstant(abs(arg.asNumber()), arg); 37 } 38 39 } 40
