1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Linq;
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25 | using System.Reflection;
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26 | using System.Reflection.Emit;
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27 | using HeuristicLab.Common;
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28 | using HeuristicLab.Core;
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29 | using HeuristicLab.Data;
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30 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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31 | using HeuristicLab.Parameters;
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32 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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33 |
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34 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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35 | [StorableClass]
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36 | [Item("SymbolicDataAnalysisExpressionTreeILEmittingInterpreter", "Interpreter for symbolic expression trees.")]
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37 | public sealed class SymbolicDataAnalysisExpressionTreeILEmittingInterpreter : ParameterizedNamedItem, ISymbolicDataAnalysisExpressionTreeInterpreter {
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38 | private static readonly Type thisType = typeof(SymbolicDataAnalysisExpressionTreeILEmittingInterpreter);
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39 | internal delegate double CompiledFunction(int sampleIndex, IList<double>[] columns);
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40 |
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41 | #region method infos
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42 | private static MethodInfo listGetValue = typeof(IList<double>).GetProperty("Item", new Type[] { typeof(int) }).GetGetMethod();
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43 |
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44 | private static MethodInfo cos = typeof(Math).GetMethod("Cos", new Type[] { typeof(double) });
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45 | private static MethodInfo sin = typeof(Math).GetMethod("Sin", new Type[] { typeof(double) });
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46 | private static MethodInfo tan = typeof(Math).GetMethod("Tan", new Type[] { typeof(double) });
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47 | private static MethodInfo exp = typeof(Math).GetMethod("Exp", new Type[] { typeof(double) });
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48 | private static MethodInfo log = typeof(Math).GetMethod("Log", new Type[] { typeof(double) });
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49 | private static MethodInfo power = typeof(Math).GetMethod("Pow", new Type[] { typeof(double), typeof(double) });
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50 | private static MethodInfo round = typeof(Math).GetMethod("Round", new Type[] { typeof(double) });
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51 | private static MethodInfo sqrt = typeof(Math).GetMethod("Sqrt", new Type[] { typeof(double) });
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52 |
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53 | private static MethodInfo airyA = thisType.GetMethod("AiryA", new Type[] { typeof(double) });
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54 | private static MethodInfo airyB = thisType.GetMethod("AiryB", new Type[] { typeof(double) });
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55 | private static MethodInfo gamma = thisType.GetMethod("Gamma", new Type[] { typeof(double) });
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56 | private static MethodInfo psi = thisType.GetMethod("Psi", new Type[] { typeof(double) });
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57 | private static MethodInfo dawson = thisType.GetMethod("Dawson", new Type[] { typeof(double) });
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58 | private static MethodInfo expIntegralEi = thisType.GetMethod("ExpIntegralEi", new Type[] { typeof(double) });
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59 | private static MethodInfo sinIntegral = thisType.GetMethod("SinIntegral", new Type[] { typeof(double) });
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60 | private static MethodInfo cosIntegral = thisType.GetMethod("CosIntegral", new Type[] { typeof(double) });
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61 | private static MethodInfo hypSinIntegral = thisType.GetMethod("HypSinIntegral", new Type[] { typeof(double) });
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62 | private static MethodInfo hypCosIntegral = thisType.GetMethod("HypCosIntegral", new Type[] { typeof(double) });
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63 | private static MethodInfo fresnelCosIntegral = thisType.GetMethod("FresnelCosIntegral", new Type[] { typeof(double) });
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64 | private static MethodInfo fresnelSinIntegral = thisType.GetMethod("FresnelSinIntegral", new Type[] { typeof(double) });
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65 | private static MethodInfo norm = thisType.GetMethod("Norm", new Type[] { typeof(double) });
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66 | private static MethodInfo erf = thisType.GetMethod("Erf", new Type[] { typeof(double) });
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67 | private static MethodInfo bessel = thisType.GetMethod("Bessel", new Type[] { typeof(double) });
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68 | #endregion
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69 |
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70 | private const string CheckExpressionsWithIntervalArithmeticParameterName = "CheckExpressionsWithIntervalArithmetic";
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71 | private const string EvaluatedSolutionsParameterName = "EvaluatedSolutions";
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72 |
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73 | public override bool CanChangeName {
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74 | get { return false; }
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75 | }
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76 |
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77 | public override bool CanChangeDescription {
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78 | get { return false; }
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79 | }
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80 |
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81 | #region parameter properties
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82 |
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83 | public IValueParameter<BoolValue> CheckExpressionsWithIntervalArithmeticParameter {
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84 | get { return (IValueParameter<BoolValue>)Parameters[CheckExpressionsWithIntervalArithmeticParameterName]; }
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85 | }
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86 |
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87 | public IValueParameter<IntValue> EvaluatedSolutionsParameter {
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88 | get { return (IValueParameter<IntValue>)Parameters[EvaluatedSolutionsParameterName]; }
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89 | }
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90 |
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91 | #endregion
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92 |
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93 | #region properties
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94 |
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95 | public BoolValue CheckExpressionsWithIntervalArithmetic {
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96 | get { return CheckExpressionsWithIntervalArithmeticParameter.Value; }
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97 | set { CheckExpressionsWithIntervalArithmeticParameter.Value = value; }
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98 | }
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99 |
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100 | public IntValue EvaluatedSolutions {
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101 | get { return EvaluatedSolutionsParameter.Value; }
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102 | set { EvaluatedSolutionsParameter.Value = value; }
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103 | }
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104 |
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105 | #endregion
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106 |
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107 |
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108 | [StorableConstructor]
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109 | private SymbolicDataAnalysisExpressionTreeILEmittingInterpreter(bool deserializing) : base(deserializing) { }
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110 |
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111 | private SymbolicDataAnalysisExpressionTreeILEmittingInterpreter(SymbolicDataAnalysisExpressionTreeILEmittingInterpreter original, Cloner cloner) : base(original, cloner) { }
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112 | public override IDeepCloneable Clone(Cloner cloner) {
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113 | return new SymbolicDataAnalysisExpressionTreeILEmittingInterpreter(this, cloner);
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114 | }
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115 |
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116 | public SymbolicDataAnalysisExpressionTreeILEmittingInterpreter()
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117 | : base("SymbolicDataAnalysisExpressionTreeILEmittingInterpreter", "Interpreter for symbolic expression trees.") {
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118 | Parameters.Add(new ValueParameter<BoolValue>(CheckExpressionsWithIntervalArithmeticParameterName, "Switch that determines if the interpreter checks the validity of expressions with interval arithmetic before evaluating the expression.", new BoolValue(false)));
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119 | Parameters.Add(new ValueParameter<IntValue>(EvaluatedSolutionsParameterName, "A counter for the total number of solutions the interpreter has evaluated", new IntValue(0)));
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120 | }
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121 |
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122 | [StorableHook(HookType.AfterDeserialization)]
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123 | private void AfterDeserialization() {
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124 | if (!Parameters.ContainsKey(EvaluatedSolutionsParameterName))
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125 | Parameters.Add(new ValueParameter<IntValue>(EvaluatedSolutionsParameterName, "A counter for the total number of solutions the interpreter has evaluated", new IntValue(0)));
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126 | }
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127 |
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128 | #region IStatefulItem
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129 |
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130 | public void InitializeState() {
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131 | EvaluatedSolutions.Value = 0;
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132 | }
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133 |
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134 | public void ClearState() {
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135 | EvaluatedSolutions.Value = 0;
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136 | }
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137 |
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138 | #endregion
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139 |
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140 | public IEnumerable<double> GetSymbolicExpressionTreeValues(ISymbolicExpressionTree tree, Dataset dataset, IEnumerable<int> rows) {
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141 | if (CheckExpressionsWithIntervalArithmetic.Value)
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142 | throw new NotSupportedException("Interval arithmetic is not yet supported in the symbolic data analysis interpreter.");
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143 |
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144 | EvaluatedSolutions.Value++; // increment the evaluated solutions counter
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145 | var state = PrepareInterpreterState(tree, dataset);
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146 |
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147 | Type[] methodArgs = { typeof(int), typeof(IList<double>[]) };
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148 | DynamicMethod testFun = new DynamicMethod("TestFun", typeof(double), methodArgs, typeof(SymbolicDataAnalysisExpressionTreeILEmittingInterpreter).Module);
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149 |
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150 | ILGenerator il = testFun.GetILGenerator();
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151 | CompileInstructions(il, state, dataset);
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152 | il.Emit(System.Reflection.Emit.OpCodes.Conv_R8);
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153 | il.Emit(System.Reflection.Emit.OpCodes.Ret);
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154 | var function = (CompiledFunction)testFun.CreateDelegate(typeof(CompiledFunction));
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155 |
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156 | IList<double>[] columns = dataset.DoubleVariables.Select(v => dataset.GetReadOnlyDoubleValues(v)).ToArray();
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157 |
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158 | foreach (var row in rows) {
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159 | yield return function(row, columns);
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160 | }
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161 | }
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162 |
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163 | private InterpreterState PrepareInterpreterState(ISymbolicExpressionTree tree, Dataset dataset) {
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164 | Instruction[] code = SymbolicExpressionTreeCompiler.Compile(tree, OpCodes.MapSymbolToOpCode);
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165 | Dictionary<string, int> doubleVariableNames = dataset.DoubleVariables.Select((x, i) => new { x, i }).ToDictionary(e => e.x, e => e.i);
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166 | int necessaryArgStackSize = 0;
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167 | foreach (Instruction instr in code) {
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168 | if (instr.opCode == OpCodes.Variable) {
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169 | var variableTreeNode = (VariableTreeNode)instr.dynamicNode;
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170 | instr.iArg0 = doubleVariableNames[variableTreeNode.VariableName];
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171 | } else if (instr.opCode == OpCodes.LagVariable) {
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172 | var laggedVariableTreeNode = (LaggedVariableTreeNode)instr.dynamicNode;
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173 | instr.iArg0 = doubleVariableNames[laggedVariableTreeNode.VariableName];
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174 | } else if (instr.opCode == OpCodes.VariableCondition) {
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175 | var variableConditionTreeNode = (VariableConditionTreeNode)instr.dynamicNode;
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176 | instr.iArg0 = doubleVariableNames[variableConditionTreeNode.VariableName];
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177 | } else if (instr.opCode == OpCodes.Call) {
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178 | necessaryArgStackSize += instr.nArguments + 1;
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179 | }
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180 | }
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181 | return new InterpreterState(code, necessaryArgStackSize);
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182 | }
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183 |
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184 | private void CompileInstructions(ILGenerator il, InterpreterState state, Dataset ds) {
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185 | Instruction currentInstr = state.NextInstruction();
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186 | int nArgs = currentInstr.nArguments;
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187 |
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188 | switch (currentInstr.opCode) {
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189 | case OpCodes.Add: {
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190 | if (nArgs > 0) {
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191 | CompileInstructions(il, state, ds);
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192 | }
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193 | for (int i = 1; i < nArgs; i++) {
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194 | CompileInstructions(il, state, ds);
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195 | il.Emit(System.Reflection.Emit.OpCodes.Add);
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196 | }
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197 | return;
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198 | }
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199 | case OpCodes.Sub: {
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200 | if (nArgs == 1) {
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201 | CompileInstructions(il, state, ds);
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202 | il.Emit(System.Reflection.Emit.OpCodes.Neg);
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203 | return;
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204 | }
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205 | if (nArgs > 0) {
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206 | CompileInstructions(il, state, ds);
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207 | }
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208 | for (int i = 1; i < nArgs; i++) {
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209 | CompileInstructions(il, state, ds);
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210 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
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211 | }
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212 | return;
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213 | }
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214 | case OpCodes.Mul: {
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215 | if (nArgs > 0) {
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216 | CompileInstructions(il, state, ds);
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217 | }
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218 | for (int i = 1; i < nArgs; i++) {
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219 | CompileInstructions(il, state, ds);
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220 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
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221 | }
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222 | return;
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223 | }
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224 | case OpCodes.Div: {
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225 | if (nArgs == 1) {
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226 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0);
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227 | CompileInstructions(il, state, ds);
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228 | il.Emit(System.Reflection.Emit.OpCodes.Div);
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229 | return;
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230 | }
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231 | if (nArgs > 0) {
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232 | CompileInstructions(il, state, ds);
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233 | }
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234 | for (int i = 1; i < nArgs; i++) {
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235 | CompileInstructions(il, state, ds);
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236 | il.Emit(System.Reflection.Emit.OpCodes.Div);
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237 | }
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238 | return;
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239 | }
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240 | case OpCodes.Average: {
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241 | CompileInstructions(il, state, ds);
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242 | for (int i = 1; i < nArgs; i++) {
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243 | CompileInstructions(il, state, ds);
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244 | il.Emit(System.Reflection.Emit.OpCodes.Add);
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245 | }
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246 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, nArgs);
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247 | il.Emit(System.Reflection.Emit.OpCodes.Div);
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248 | return;
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249 | }
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250 | case OpCodes.Cos: {
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251 | CompileInstructions(il, state, ds);
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252 | il.Emit(System.Reflection.Emit.OpCodes.Call, cos);
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253 | return;
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254 | }
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255 | case OpCodes.Sin: {
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256 | CompileInstructions(il, state, ds);
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257 | il.Emit(System.Reflection.Emit.OpCodes.Call, sin);
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258 | return;
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259 | }
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260 | case OpCodes.Tan: {
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261 | CompileInstructions(il, state, ds);
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262 | il.Emit(System.Reflection.Emit.OpCodes.Call, tan);
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263 | return;
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264 | }
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265 | case OpCodes.Power: {
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266 | CompileInstructions(il, state, ds);
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267 | CompileInstructions(il, state, ds);
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268 | il.Emit(System.Reflection.Emit.OpCodes.Call, round);
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269 | il.Emit(System.Reflection.Emit.OpCodes.Call, power);
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270 | return;
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271 | }
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272 | case OpCodes.Root: {
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273 | CompileInstructions(il, state, ds);
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274 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // 1 / round(...)
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275 | CompileInstructions(il, state, ds);
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276 | il.Emit(System.Reflection.Emit.OpCodes.Call, round);
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277 | il.Emit(System.Reflection.Emit.OpCodes.Div);
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278 | il.Emit(System.Reflection.Emit.OpCodes.Call, power);
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279 | return;
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280 | }
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281 | case OpCodes.Exp: {
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282 | CompileInstructions(il, state, ds);
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283 | il.Emit(System.Reflection.Emit.OpCodes.Call, exp);
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284 | return;
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285 | }
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286 | case OpCodes.Log: {
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287 | CompileInstructions(il, state, ds);
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288 | il.Emit(System.Reflection.Emit.OpCodes.Call, log);
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289 | return;
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290 | }
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291 | case OpCodes.Square: {
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292 | CompileInstructions(il, state, ds);
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293 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0);
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294 | il.Emit(System.Reflection.Emit.OpCodes.Call, power);
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295 | return;
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296 | }
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297 | case OpCodes.SquareRoot: {
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298 | CompileInstructions(il, state, ds);
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299 | il.Emit(System.Reflection.Emit.OpCodes.Call, sqrt);
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300 | return;
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301 | }
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302 | case OpCodes.AiryA: {
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303 | CompileInstructions(il, state, ds);
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304 | il.Emit(System.Reflection.Emit.OpCodes.Call, airyA);
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305 | return;
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306 | }
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307 | case OpCodes.AiryB: {
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308 | CompileInstructions(il, state, ds);
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309 | il.Emit(System.Reflection.Emit.OpCodes.Call, airyB);
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310 | return;
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311 | }
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312 | case OpCodes.Bessel: {
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313 | CompileInstructions(il, state, ds);
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314 | il.Emit(System.Reflection.Emit.OpCodes.Call, bessel);
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315 | return;
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316 | }
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317 | case OpCodes.CosineIntegral: {
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318 | CompileInstructions(il, state, ds);
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319 | il.Emit(System.Reflection.Emit.OpCodes.Call, cosIntegral);
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320 | return;
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321 | }
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322 | case OpCodes.Dawson: {
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323 | CompileInstructions(il, state, ds);
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324 | il.Emit(System.Reflection.Emit.OpCodes.Call, dawson);
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325 | return;
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326 | }
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327 | case OpCodes.Erf: {
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328 | CompileInstructions(il, state, ds);
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329 | il.Emit(System.Reflection.Emit.OpCodes.Call, erf);
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330 | return;
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331 | }
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332 | case OpCodes.ExponentialIntegralEi: {
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333 | CompileInstructions(il, state, ds);
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334 | il.Emit(System.Reflection.Emit.OpCodes.Call, expIntegralEi);
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335 | return;
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336 | }
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337 | case OpCodes.FresnelCosineIntegral: {
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338 | CompileInstructions(il, state, ds);
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339 | il.Emit(System.Reflection.Emit.OpCodes.Call, fresnelCosIntegral);
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340 | return;
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341 | }
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342 | case OpCodes.FresnelSineIntegral: {
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343 | CompileInstructions(il, state, ds);
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344 | il.Emit(System.Reflection.Emit.OpCodes.Call, fresnelSinIntegral);
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345 | return;
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346 | }
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347 | case OpCodes.Gamma: {
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348 | CompileInstructions(il, state, ds);
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349 | il.Emit(System.Reflection.Emit.OpCodes.Call, gamma);
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350 | return;
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351 | }
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352 | case OpCodes.HyperbolicCosineIntegral: {
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353 | CompileInstructions(il, state, ds);
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354 | il.Emit(System.Reflection.Emit.OpCodes.Call, hypCosIntegral);
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355 | return;
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356 | }
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357 | case OpCodes.HyperbolicSineIntegral: {
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358 | CompileInstructions(il, state, ds);
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359 | il.Emit(System.Reflection.Emit.OpCodes.Call, hypSinIntegral);
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360 | return;
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361 | }
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362 | case OpCodes.Norm: {
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363 | CompileInstructions(il, state, ds);
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364 | il.Emit(System.Reflection.Emit.OpCodes.Call, norm);
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365 | return;
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366 | }
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367 | case OpCodes.Psi: {
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368 | CompileInstructions(il, state, ds);
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369 | il.Emit(System.Reflection.Emit.OpCodes.Call, psi);
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370 | return;
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371 | }
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372 | case OpCodes.SineIntegral: {
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373 | CompileInstructions(il, state, ds);
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374 | il.Emit(System.Reflection.Emit.OpCodes.Call, sinIntegral);
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375 | return;
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376 | }
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377 | case OpCodes.IfThenElse: {
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378 | Label end = il.DefineLabel();
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379 | Label c1 = il.DefineLabel();
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380 | CompileInstructions(il, state, ds);
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381 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // > 0
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382 | il.Emit(System.Reflection.Emit.OpCodes.Cgt);
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383 | il.Emit(System.Reflection.Emit.OpCodes.Brfalse, c1);
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384 | CompileInstructions(il, state, ds);
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385 | il.Emit(System.Reflection.Emit.OpCodes.Br, end);
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386 | il.MarkLabel(c1);
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387 | CompileInstructions(il, state, ds);
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388 | il.MarkLabel(end);
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389 | return;
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390 | }
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391 | case OpCodes.AND: {
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392 | Label falseBranch = il.DefineLabel();
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393 | Label end = il.DefineLabel();
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394 | CompileInstructions(il, state, ds);
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395 | for (int i = 1; i < nArgs; i++) {
|
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396 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // > 0
|
---|
397 | il.Emit(System.Reflection.Emit.OpCodes.Cgt);
|
---|
398 | il.Emit(System.Reflection.Emit.OpCodes.Brfalse, falseBranch);
|
---|
399 | CompileInstructions(il, state, ds);
|
---|
400 | }
|
---|
401 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // > 0
|
---|
402 | il.Emit(System.Reflection.Emit.OpCodes.Cgt);
|
---|
403 | il.Emit(System.Reflection.Emit.OpCodes.Brfalse, falseBranch);
|
---|
404 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // 1
|
---|
405 | il.Emit(System.Reflection.Emit.OpCodes.Br, end);
|
---|
406 | il.MarkLabel(falseBranch);
|
---|
407 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // -1
|
---|
408 | il.Emit(System.Reflection.Emit.OpCodes.Neg);
|
---|
409 | il.MarkLabel(end);
|
---|
410 | return;
|
---|
411 | }
|
---|
412 | case OpCodes.OR: {
|
---|
413 | Label trueBranch = il.DefineLabel();
|
---|
414 | Label end = il.DefineLabel();
|
---|
415 | Label resultBranch = il.DefineLabel();
|
---|
416 | CompileInstructions(il, state, ds);
|
---|
417 | for (int i = 1; i < nArgs; i++) {
|
---|
418 | Label nextArgBranch = il.DefineLabel();
|
---|
419 | // complex definition because of special properties of NaN
|
---|
420 | il.Emit(System.Reflection.Emit.OpCodes.Dup);
|
---|
421 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // <= 0
|
---|
422 | il.Emit(System.Reflection.Emit.OpCodes.Ble, nextArgBranch);
|
---|
423 | il.Emit(System.Reflection.Emit.OpCodes.Br, resultBranch);
|
---|
424 | il.MarkLabel(nextArgBranch);
|
---|
425 | il.Emit(System.Reflection.Emit.OpCodes.Pop);
|
---|
426 | CompileInstructions(il, state, ds);
|
---|
427 | }
|
---|
428 | il.MarkLabel(resultBranch);
|
---|
429 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // > 0
|
---|
430 | il.Emit(System.Reflection.Emit.OpCodes.Cgt);
|
---|
431 | il.Emit(System.Reflection.Emit.OpCodes.Brtrue, trueBranch);
|
---|
432 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // -1
|
---|
433 | il.Emit(System.Reflection.Emit.OpCodes.Neg);
|
---|
434 | il.Emit(System.Reflection.Emit.OpCodes.Br, end);
|
---|
435 | il.MarkLabel(trueBranch);
|
---|
436 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // 1
|
---|
437 | il.MarkLabel(end);
|
---|
438 | return;
|
---|
439 | }
|
---|
440 | case OpCodes.NOT: {
|
---|
441 | CompileInstructions(il, state, ds);
|
---|
442 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0); // > 0
|
---|
443 | il.Emit(System.Reflection.Emit.OpCodes.Cgt);
|
---|
444 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0); // * 2
|
---|
445 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
446 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // - 1
|
---|
447 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
448 | il.Emit(System.Reflection.Emit.OpCodes.Neg); // * -1
|
---|
449 | return;
|
---|
450 | }
|
---|
451 | case OpCodes.GT: {
|
---|
452 | CompileInstructions(il, state, ds);
|
---|
453 | CompileInstructions(il, state, ds);
|
---|
454 |
|
---|
455 | il.Emit(System.Reflection.Emit.OpCodes.Cgt); // 1 (>) / 0 (otherwise)
|
---|
456 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0); // * 2
|
---|
457 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
458 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // - 1
|
---|
459 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
460 | return;
|
---|
461 | }
|
---|
462 | case OpCodes.LT: {
|
---|
463 | CompileInstructions(il, state, ds);
|
---|
464 | CompileInstructions(il, state, ds);
|
---|
465 | il.Emit(System.Reflection.Emit.OpCodes.Clt);
|
---|
466 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0); // * 2
|
---|
467 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
468 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 1.0); // - 1
|
---|
469 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
470 | return;
|
---|
471 | }
|
---|
472 | case OpCodes.TimeLag: {
|
---|
473 | LaggedTreeNode laggedTreeNode = (LaggedTreeNode)currentInstr.dynamicNode;
|
---|
474 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row -= lag
|
---|
475 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, laggedTreeNode.Lag);
|
---|
476 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
477 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
478 | var prevLaggedContext = state.InLaggedContext;
|
---|
479 | state.InLaggedContext = true;
|
---|
480 | CompileInstructions(il, state, ds);
|
---|
481 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row += lag
|
---|
482 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, laggedTreeNode.Lag);
|
---|
483 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
484 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
485 | state.InLaggedContext = prevLaggedContext;
|
---|
486 | return;
|
---|
487 | }
|
---|
488 | case OpCodes.Integral: {
|
---|
489 | int savedPc = state.ProgramCounter;
|
---|
490 | LaggedTreeNode laggedTreeNode = (LaggedTreeNode)currentInstr.dynamicNode;
|
---|
491 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row -= lag
|
---|
492 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, laggedTreeNode.Lag);
|
---|
493 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
494 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
495 | var prevLaggedContext = state.InLaggedContext;
|
---|
496 | state.InLaggedContext = true;
|
---|
497 | CompileInstructions(il, state, ds);
|
---|
498 | for (int l = laggedTreeNode.Lag; l < 0; l++) {
|
---|
499 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row += lag
|
---|
500 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_1);
|
---|
501 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
502 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
503 | state.ProgramCounter = savedPc;
|
---|
504 | CompileInstructions(il, state, ds);
|
---|
505 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
506 | }
|
---|
507 | state.InLaggedContext = prevLaggedContext;
|
---|
508 | return;
|
---|
509 | }
|
---|
510 |
|
---|
511 | //mkommend: derivate calculation taken from:
|
---|
512 | //http://www.holoborodko.com/pavel/numerical-methods/numerical-derivative/smooth-low-noise-differentiators/
|
---|
513 | //one sided smooth differentiatior, N = 4
|
---|
514 | // y' = 1/8h (f_i + 2f_i-1, -2 f_i-3 - f_i-4)
|
---|
515 | case OpCodes.Derivative: {
|
---|
516 | int savedPc = state.ProgramCounter;
|
---|
517 | CompileInstructions(il, state, ds);
|
---|
518 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row --
|
---|
519 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_M1);
|
---|
520 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
521 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
522 | state.ProgramCounter = savedPc;
|
---|
523 | var prevLaggedContext = state.InLaggedContext;
|
---|
524 | state.InLaggedContext = true;
|
---|
525 | CompileInstructions(il, state, ds);
|
---|
526 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0); // f_0 + 2 * f_1
|
---|
527 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
528 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
529 |
|
---|
530 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row -=2
|
---|
531 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_2);
|
---|
532 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
533 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
534 | state.ProgramCounter = savedPc;
|
---|
535 | CompileInstructions(il, state, ds);
|
---|
536 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 2.0); // f_0 + 2 * f_1 - 2 * f_3
|
---|
537 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
538 | il.Emit(System.Reflection.Emit.OpCodes.Sub);
|
---|
539 |
|
---|
540 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row --
|
---|
541 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_M1);
|
---|
542 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
543 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
544 | state.ProgramCounter = savedPc;
|
---|
545 | CompileInstructions(il, state, ds);
|
---|
546 | il.Emit(System.Reflection.Emit.OpCodes.Sub); // f_0 + 2 * f_1 - 2 * f_3 - f_4
|
---|
547 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, 8.0); // / 8
|
---|
548 | il.Emit(System.Reflection.Emit.OpCodes.Div);
|
---|
549 |
|
---|
550 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // row +=4
|
---|
551 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_4);
|
---|
552 | il.Emit(System.Reflection.Emit.OpCodes.Add);
|
---|
553 | il.Emit(System.Reflection.Emit.OpCodes.Starg, 0);
|
---|
554 | state.InLaggedContext = prevLaggedContext;
|
---|
555 | return;
|
---|
556 | }
|
---|
557 | case OpCodes.Call: {
|
---|
558 | throw new NotSupportedException(
|
---|
559 | "Automatically defined functions are not supported by the SymbolicDataAnalysisTreeILEmittingInterpreter. Either turn of ADFs or change the interpeter.");
|
---|
560 | }
|
---|
561 | case OpCodes.Arg: {
|
---|
562 | throw new NotSupportedException(
|
---|
563 | "Automatically defined functions are not supported by the SymbolicDataAnalysisTreeILEmittingInterpreter. Either turn of ADFs or change the interpeter.");
|
---|
564 | }
|
---|
565 | case OpCodes.Variable: {
|
---|
566 | VariableTreeNode varNode = (VariableTreeNode)currentInstr.dynamicNode;
|
---|
567 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1); // load columns array
|
---|
568 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, (int)currentInstr.iArg0);
|
---|
569 | // load correct column of the current variable
|
---|
570 | il.Emit(System.Reflection.Emit.OpCodes.Ldelem_Ref);
|
---|
571 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // rowIndex
|
---|
572 | if (!state.InLaggedContext) {
|
---|
573 | il.Emit(System.Reflection.Emit.OpCodes.Call, listGetValue);
|
---|
574 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, varNode.Weight); // load weight
|
---|
575 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
576 | } else {
|
---|
577 | var nanResult = il.DefineLabel();
|
---|
578 | var normalResult = il.DefineLabel();
|
---|
579 | il.Emit(System.Reflection.Emit.OpCodes.Dup);
|
---|
580 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0);
|
---|
581 | il.Emit(System.Reflection.Emit.OpCodes.Blt, nanResult);
|
---|
582 | il.Emit(System.Reflection.Emit.OpCodes.Dup);
|
---|
583 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, ds.Rows);
|
---|
584 | il.Emit(System.Reflection.Emit.OpCodes.Bge, nanResult);
|
---|
585 | il.Emit(System.Reflection.Emit.OpCodes.Call, listGetValue);
|
---|
586 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, varNode.Weight); // load weight
|
---|
587 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
588 | il.Emit(System.Reflection.Emit.OpCodes.Br, normalResult);
|
---|
589 | il.MarkLabel(nanResult);
|
---|
590 | il.Emit(System.Reflection.Emit.OpCodes.Pop); // rowIndex
|
---|
591 | il.Emit(System.Reflection.Emit.OpCodes.Pop); // column reference
|
---|
592 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, double.NaN);
|
---|
593 | il.MarkLabel(normalResult);
|
---|
594 | }
|
---|
595 | return;
|
---|
596 | }
|
---|
597 | case OpCodes.LagVariable: {
|
---|
598 | var nanResult = il.DefineLabel();
|
---|
599 | var normalResult = il.DefineLabel();
|
---|
600 | LaggedVariableTreeNode varNode = (LaggedVariableTreeNode)currentInstr.dynamicNode;
|
---|
601 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1); // load columns array
|
---|
602 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, (int)currentInstr.iArg0);
|
---|
603 | // load correct column of the current variable
|
---|
604 | il.Emit(System.Reflection.Emit.OpCodes.Ldelem_Ref);
|
---|
605 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, varNode.Lag); // lag
|
---|
606 | il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // rowIndex
|
---|
607 | il.Emit(System.Reflection.Emit.OpCodes.Add); // actualRowIndex = rowIndex + sampleOffset
|
---|
608 | il.Emit(System.Reflection.Emit.OpCodes.Dup);
|
---|
609 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4_0);
|
---|
610 | il.Emit(System.Reflection.Emit.OpCodes.Blt, nanResult);
|
---|
611 | il.Emit(System.Reflection.Emit.OpCodes.Dup);
|
---|
612 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, ds.Rows);
|
---|
613 | il.Emit(System.Reflection.Emit.OpCodes.Bge, nanResult);
|
---|
614 | il.Emit(System.Reflection.Emit.OpCodes.Call, listGetValue);
|
---|
615 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, varNode.Weight); // load weight
|
---|
616 | il.Emit(System.Reflection.Emit.OpCodes.Mul);
|
---|
617 | il.Emit(System.Reflection.Emit.OpCodes.Br, normalResult);
|
---|
618 | il.MarkLabel(nanResult);
|
---|
619 | il.Emit(System.Reflection.Emit.OpCodes.Pop); // sample index
|
---|
620 | il.Emit(System.Reflection.Emit.OpCodes.Pop); // column reference
|
---|
621 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, double.NaN);
|
---|
622 | il.MarkLabel(normalResult);
|
---|
623 | return;
|
---|
624 | }
|
---|
625 | case OpCodes.Constant: {
|
---|
626 | ConstantTreeNode constNode = (ConstantTreeNode)currentInstr.dynamicNode;
|
---|
627 | il.Emit(System.Reflection.Emit.OpCodes.Ldc_R8, constNode.Value);
|
---|
628 | return;
|
---|
629 | }
|
---|
630 |
|
---|
631 | //mkommend: this symbol uses the logistic function f(x) = 1 / (1 + e^(-alpha * x) )
|
---|
632 | //to determine the relative amounts of the true and false branch see http://en.wikipedia.org/wiki/Logistic_function
|
---|
633 | case OpCodes.VariableCondition: {
|
---|
634 | throw new NotSupportedException("Interpretation of symbol " + currentInstr.dynamicNode.Symbol.Name +
|
---|
635 | " is not supported by the SymbolicDataAnalysisTreeILEmittingInterpreter");
|
---|
636 | }
|
---|
637 | default:
|
---|
638 | throw new NotSupportedException("Interpretation of symbol " + currentInstr.dynamicNode.Symbol.Name +
|
---|
639 | " is not supported by the SymbolicDataAnalysisTreeILEmittingInterpreter");
|
---|
640 | }
|
---|
641 | }
|
---|
642 |
|
---|
643 | public static double AiryA(double x) {
|
---|
644 | if (double.IsNaN(x)) return double.NaN;
|
---|
645 | double ai, aip, bi, bip;
|
---|
646 | alglib.airy(x, out ai, out aip, out bi, out bip);
|
---|
647 | return ai;
|
---|
648 | }
|
---|
649 |
|
---|
650 | public static double AiryB(double x) {
|
---|
651 | if (double.IsNaN(x)) return double.NaN;
|
---|
652 | double ai, aip, bi, bip;
|
---|
653 | alglib.airy(x, out ai, out aip, out bi, out bip);
|
---|
654 | return bi;
|
---|
655 | }
|
---|
656 | public static double Dawson(double x) {
|
---|
657 | if (double.IsNaN(x)) return double.NaN;
|
---|
658 | return alglib.dawsonintegral(x);
|
---|
659 | }
|
---|
660 |
|
---|
661 | public static double Gamma(double x) {
|
---|
662 | if (double.IsNaN(x)) return double.NaN;
|
---|
663 | return alglib.gammafunction(x);
|
---|
664 | }
|
---|
665 |
|
---|
666 | public static double Psi(double x) {
|
---|
667 | if (double.IsNaN(x)) return double.NaN;
|
---|
668 | else if (x <= 0 && (Math.Floor(x) - x).IsAlmost(0)) return double.NaN;
|
---|
669 | return alglib.psi(x);
|
---|
670 | }
|
---|
671 |
|
---|
672 | public static double ExpIntegralEi(double x) {
|
---|
673 | if (double.IsNaN(x)) return double.NaN;
|
---|
674 | return alglib.exponentialintegralei(x);
|
---|
675 | }
|
---|
676 |
|
---|
677 | public static double SinIntegral(double x) {
|
---|
678 | if (double.IsNaN(x)) return double.NaN;
|
---|
679 | double si, ci;
|
---|
680 | alglib.sinecosineintegrals(x, out si, out ci);
|
---|
681 | return si;
|
---|
682 | }
|
---|
683 |
|
---|
684 | public static double CosIntegral(double x) {
|
---|
685 | if (double.IsNaN(x)) return double.NaN;
|
---|
686 | double si, ci;
|
---|
687 | alglib.sinecosineintegrals(x, out si, out ci);
|
---|
688 | return ci;
|
---|
689 | }
|
---|
690 |
|
---|
691 | public static double HypSinIntegral(double x) {
|
---|
692 | if (double.IsNaN(x)) return double.NaN;
|
---|
693 | double shi, chi;
|
---|
694 | alglib.hyperbolicsinecosineintegrals(x, out shi, out chi);
|
---|
695 | return shi;
|
---|
696 | }
|
---|
697 |
|
---|
698 | public static double HypCosIntegral(double x) {
|
---|
699 | if (double.IsNaN(x)) return double.NaN;
|
---|
700 | double shi, chi;
|
---|
701 | alglib.hyperbolicsinecosineintegrals(x, out shi, out chi);
|
---|
702 | return chi;
|
---|
703 | }
|
---|
704 |
|
---|
705 | public static double FresnelCosIntegral(double x) {
|
---|
706 | if (double.IsNaN(x)) return double.NaN;
|
---|
707 | double c = 0, s = 0;
|
---|
708 | alglib.fresnelintegral(x, ref c, ref s);
|
---|
709 | return c;
|
---|
710 | }
|
---|
711 |
|
---|
712 | public static double FresnelSinIntegral(double x) {
|
---|
713 | if (double.IsNaN(x)) return double.NaN;
|
---|
714 | double c = 0, s = 0;
|
---|
715 | alglib.fresnelintegral(x, ref c, ref s);
|
---|
716 | return s;
|
---|
717 | }
|
---|
718 |
|
---|
719 | public static double Norm(double x) {
|
---|
720 | if (double.IsNaN(x)) return double.NaN;
|
---|
721 | return alglib.normaldistribution(x);
|
---|
722 | }
|
---|
723 |
|
---|
724 | public static double Erf(double x) {
|
---|
725 | if (double.IsNaN(x)) return double.NaN;
|
---|
726 | return alglib.errorfunction(x);
|
---|
727 | }
|
---|
728 |
|
---|
729 | public static double Bessel(double x) {
|
---|
730 | if (double.IsNaN(x)) return double.NaN;
|
---|
731 | return alglib.besseli0(x);
|
---|
732 | }
|
---|
733 | }
|
---|
734 | }
|
---|