1 /* 2 * Copyright (c) 2001, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 # include "incls/_precompiled.incl" 26 # include "incls/_numberSeq.cpp.incl" 27 28 AbsSeq::AbsSeq(double alpha) : 29 _num(0), _sum(0.0), _sum_of_squares(0.0), 30 _davg(0.0), _dvariance(0.0), _alpha(alpha) { 31 } 32 33 void AbsSeq::add(double val) { 34 if (_num == 0) { 35 // if the sequence is empty, the davg is the same as the value 36 _davg = val; 37 // and the variance is 0 38 _dvariance = 0.0; 39 } else { 40 // otherwise, calculate both 41 _davg = (1.0 - _alpha) * val + _alpha * _davg; 42 double diff = val - _davg; 43 _dvariance = (1.0 - _alpha) * diff * diff + _alpha * _dvariance; 44 } 45 } 46 | 1 /* 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "memory/allocation.inline.hpp" 27 #include "utilities/debug.hpp" 28 #include "utilities/globalDefinitions.hpp" 29 #include "utilities/numberSeq.hpp" 30 31 AbsSeq::AbsSeq(double alpha) : 32 _num(0), _sum(0.0), _sum_of_squares(0.0), 33 _davg(0.0), _dvariance(0.0), _alpha(alpha) { 34 } 35 36 void AbsSeq::add(double val) { 37 if (_num == 0) { 38 // if the sequence is empty, the davg is the same as the value 39 _davg = val; 40 // and the variance is 0 41 _dvariance = 0.0; 42 } else { 43 // otherwise, calculate both 44 _davg = (1.0 - _alpha) * val + _alpha * _davg; 45 double diff = val - _davg; 46 _dvariance = (1.0 - _alpha) * diff * diff + _alpha * _dvariance; 47 } 48 } 49 |