Mercurial Hosting > luan
annotate core/src/luan/modules/MathLuan.java @ 244:0a8e6fdb62f0
fix Math.random()
git-svn-id: https://luan-java.googlecode.com/svn/trunk@245 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 09 Oct 2014 22:44:07 +0000 |
parents | ec016471c6eb |
children | 58752e3e4c5c |
rev | line source |
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167
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1 package luan.modules; |
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2 |
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3 import luan.Luan; |
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4 import luan.LuanState; |
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5 import luan.LuanTable; |
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6 import luan.LuanFunction; |
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7 import luan.LuanJavaFunction; |
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8 import luan.LuanException; |
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9 |
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10 |
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11 public final class MathLuan { |
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12 |
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13 public static final LuanFunction LOADER = new LuanFunction() { |
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14 @Override public Object call(LuanState luan,Object[] args) { |
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15 LuanTable module = Luan.newTable(); |
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16 try { |
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17 add( module, "abs", Double.TYPE ); |
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18 add( module, "acos", Double.TYPE ); |
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19 add( module, "asin", Double.TYPE ); |
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20 add( module, "atan", Double.TYPE ); |
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21 add( module, "atan2", Double.TYPE, Double.TYPE ); |
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22 add( module, "ceil", Double.TYPE ); |
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23 add( module, "cos", Double.TYPE ); |
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24 add( module, "cosh", Double.TYPE ); |
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25 add( module, "deg", Double.TYPE ); |
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26 add( module, "exp", Double.TYPE ); |
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27 add( module, "floor", Double.TYPE ); |
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28 add( module, "log", Double.TYPE ); |
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29 add( module, "min", Double.TYPE, new double[0].getClass() ); |
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30 add( module, "max", Double.TYPE, new double[0].getClass() ); |
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31 add( module, "modf", Double.TYPE ); |
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32 module.put("pi",Math.PI); |
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33 add( module, "pow", Double.TYPE, Double.TYPE ); |
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34 add( module, "rad", Double.TYPE ); |
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35 add( module, "random", Integer.class, Integer.class ); |
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36 add( module, "sin", Double.TYPE ); |
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37 add( module, "sinh", Double.TYPE ); |
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38 add( module, "sqrt", Double.TYPE ); |
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39 add( module, "tan", Double.TYPE ); |
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40 add( module, "tanh", Double.TYPE ); |
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41 } catch(NoSuchMethodException e) { |
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42 throw new RuntimeException(e); |
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43 } |
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44 return module; |
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45 } |
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46 }; |
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47 |
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48 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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49 t.put( method, new LuanJavaFunction(MathLuan.class.getMethod(method,parameterTypes),null) ); |
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50 } |
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51 |
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52 public static double abs(double x) { |
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53 return Math.abs(x); |
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54 } |
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55 |
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56 public static double acos(double x) { |
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57 return Math.acos(x); |
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58 } |
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59 |
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60 public static double asin(double x) { |
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61 return Math.asin(x); |
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62 } |
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63 |
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64 public static double atan(double x) { |
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65 return Math.atan(x); |
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66 } |
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67 |
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68 public static double atan2(double y,double x) { |
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69 return Math.atan2(y,x); |
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70 } |
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71 |
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72 public static double ceil(double x) { |
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73 return Math.ceil(x); |
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74 } |
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75 |
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76 public static double cos(double x) { |
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77 return Math.cos(x); |
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78 } |
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79 |
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80 public static double cosh(double x) { |
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81 return Math.cosh(x); |
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82 } |
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83 |
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84 public static double deg(double x) { |
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85 return Math.toDegrees(x); |
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86 } |
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87 |
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88 public static double exp(double x) { |
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89 return Math.exp(x); |
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90 } |
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91 |
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92 public static double floor(double x) { |
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93 return Math.floor(x); |
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94 } |
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95 |
97
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96 public static double log(double x) { |
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97 return Math.log(x); |
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98 } |
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99 |
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100 public static double min(double x,double... a) { |
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101 for( double d : a ) { |
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102 if( x > d ) |
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103 x = d; |
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104 } |
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105 return x; |
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106 } |
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107 |
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108 public static double max(double x,double... a) { |
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109 for( double d : a ) { |
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110 if( x < d ) |
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111 x = d; |
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112 } |
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113 return x; |
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114 } |
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115 |
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116 public static double[] modf(double x) { |
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117 double i = (int)x; |
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118 return new double[]{i,x-i}; |
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119 } |
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120 |
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121 public static double pow(double x,double y) { |
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122 return Math.pow(x,y); |
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123 } |
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124 |
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125 public static double rad(double x) { |
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126 return Math.toRadians(x); |
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127 } |
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128 |
244
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129 public static double random(Integer m,Integer n) { |
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130 if( m==null ) |
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131 return Math.random(); |
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132 if( n==null ) |
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133 return Math.floor(m*Math.random()) + 1; |
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134 return Math.floor((n-m)*Math.random()) + m; |
97
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135 } |
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136 |
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137 public static double sin(double x) { |
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138 return Math.sin(x); |
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139 } |
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140 |
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141 public static double sinh(double x) { |
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142 return Math.sinh(x); |
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143 } |
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144 |
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145 public static double sqrt(double x) { |
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146 return Math.sqrt(x); |
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147 } |
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148 |
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149 public static double tan(double x) { |
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150 return Math.tan(x); |
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151 } |
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152 |
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153 public static double tanh(double x) { |
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154 return Math.tanh(x); |
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155 } |
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156 |
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157 } |