Mercurial Hosting > luan
annotate src/luan/lib/MathLib.java @ 124:f537ff5e511d
minor cleanup
git-svn-id: https://luan-java.googlecode.com/svn/trunk@125 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 06 Jun 2014 03:41:04 +0000 |
parents | f5af13062b10 |
children | 3119326260ea |
rev | line source |
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1 package luan.lib; |
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2 |
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3 import luan.LuanState; |
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4 import luan.LuanTable; |
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5 import luan.LuanFunction; |
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6 import luan.LuanJavaFunction; |
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7 import luan.LuanException; |
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8 |
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9 |
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10 public final class MathLib { |
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11 |
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12 public static void load(LuanState luan) throws LuanException { |
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13 luan.load("Math",LOADER); |
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14 } |
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15 |
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16 public static final LuanFunction LOADER = new LuanFunction() { |
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17 @Override public Object call(LuanState luan,Object[] args) { |
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18 LuanTable module = new LuanTable(); |
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19 try { |
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20 add( module, "abs", Double.TYPE ); |
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21 add( module, "acos", Double.TYPE ); |
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22 add( module, "asin", Double.TYPE ); |
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23 add( module, "atan", Double.TYPE ); |
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24 add( module, "atan2", Double.TYPE, Double.TYPE ); |
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25 add( module, "ceil", Double.TYPE ); |
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26 add( module, "cos", Double.TYPE ); |
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27 add( module, "cosh", Double.TYPE ); |
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28 add( module, "deg", Double.TYPE ); |
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29 add( module, "exp", Double.TYPE ); |
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30 add( module, "floor", Double.TYPE ); |
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31 add( module, "log", Double.TYPE ); |
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32 add( module, "min", Double.TYPE, new double[0].getClass() ); |
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33 add( module, "max", Double.TYPE, new double[0].getClass() ); |
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34 add( module, "modf", Double.TYPE ); |
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35 module.put("pi",Math.PI); |
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36 add( module, "pow", Double.TYPE, Double.TYPE ); |
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37 add( module, "rad", Double.TYPE ); |
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38 add( module, "random" ); |
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39 add( module, "sin", Double.TYPE ); |
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40 add( module, "sinh", Double.TYPE ); |
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41 add( module, "sqrt", Double.TYPE ); |
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42 add( module, "tan", Double.TYPE ); |
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43 add( module, "tanh", Double.TYPE ); |
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44 } catch(NoSuchMethodException e) { |
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45 throw new RuntimeException(e); |
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46 } |
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47 return module; |
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48 } |
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49 }; |
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50 |
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51 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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52 t.put( method, new LuanJavaFunction(MathLib.class.getMethod(method,parameterTypes),null) ); |
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53 } |
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54 |
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55 public static double abs(double x) { |
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56 return Math.abs(x); |
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57 } |
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58 |
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59 public static double acos(double x) { |
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60 return Math.acos(x); |
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61 } |
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62 |
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63 public static double asin(double x) { |
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64 return Math.asin(x); |
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65 } |
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66 |
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67 public static double atan(double x) { |
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68 return Math.atan(x); |
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69 } |
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70 |
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71 public static double atan2(double y,double x) { |
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72 return Math.atan2(y,x); |
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73 } |
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74 |
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75 public static double ceil(double x) { |
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76 return Math.ceil(x); |
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77 } |
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78 |
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79 public static double cos(double x) { |
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80 return Math.cos(x); |
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81 } |
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82 |
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83 public static double cosh(double x) { |
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84 return Math.cosh(x); |
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85 } |
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86 |
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87 public static double deg(double x) { |
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88 return Math.toDegrees(x); |
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89 } |
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90 |
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91 public static double exp(double x) { |
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92 return Math.exp(x); |
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93 } |
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94 |
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95 public static double floor(double x) { |
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96 return Math.floor(x); |
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97 } |
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98 |
97
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99 public static double log(double x) { |
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100 return Math.log(x); |
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101 } |
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102 |
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103 public static double min(double x,double... a) { |
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104 for( double d : a ) { |
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105 if( x > d ) |
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106 x = d; |
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107 } |
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108 return x; |
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109 } |
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110 |
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111 public static double max(double x,double... a) { |
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112 for( double d : a ) { |
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113 if( x < d ) |
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114 x = d; |
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115 } |
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116 return x; |
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117 } |
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118 |
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119 public static double[] modf(double x) { |
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120 double i = (int)x; |
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121 return new double[]{i,x-i}; |
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122 } |
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123 |
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124 public static double pow(double x,double y) { |
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125 return Math.pow(x,y); |
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126 } |
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127 |
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128 public static double rad(double x) { |
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129 return Math.toRadians(x); |
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130 } |
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131 |
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132 public static double random() { |
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133 return Math.random(); |
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134 } |
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135 |
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136 public static double sin(double x) { |
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137 return Math.sin(x); |
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138 } |
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139 |
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140 public static double sinh(double x) { |
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141 return Math.sinh(x); |
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142 } |
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143 |
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144 public static double sqrt(double x) { |
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145 return Math.sqrt(x); |
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146 } |
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147 |
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148 public static double tan(double x) { |
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149 return Math.tan(x); |
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150 } |
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151 |
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152 public static double tanh(double x) { |
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153 return Math.tanh(x); |
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154 } |
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155 |
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156 } |