rtl/java/Math.java

   1 public class Math
   2 {
   3         public static float sqrt(float x)
   4         {
   5                 return (float) java.lang.Math.sqrt(x);
   6         }
   7
   8         public static float power(float x, float y)
   9         {
  10                 return (float) java.lang.Math.pow(x, y);
  11         }
  12
  13         public static float exp(float x)
  14         {
  15                 return (float) java.lang.Math.exp(x);
  16         }
  17
  18         public static float ln(float x)
  19         {
  20                 return (float) java.lang.Math.log(x);
  21         }
  22
  23         public static float log(float x)
  24         {
  25                 return (float) java.lang.Math.log10(x);
  26         }
  27
  28         public static float round(float x)
  29         {
  30                 return java.lang.Math.round(x);
  31         }
  32
  33         public static float sin(float x)
  34         {
  35                 return (float) java.lang.Math.sin(x);
  36         }
  37
  38         public static float cos(float x)
  39         {
  40                 return (float) java.lang.Math.cos(x);
  41         }
  42
  43         public static float tan(float x)
  44         {
  45                 return (float) java.lang.Math.tan(x);
  46         }
  47
  48         public static float arcsin(float x)
  49         {
  50                 return (float) java.lang.Math.asin(x);
  51         }
  52
  53         public static float arccos(float x)
  54         {
  55                 return (float) java.lang.Math.acos(x);
  56         }
  57
  58         public static float arctan(float x)
  59         {
  60                 return (float) java.lang.Math.atan(x);
  61         }
  62
  63         public static float arctan2(float y, float x)
  64         {
  65                 return (float) java.lang.Math.atan2(y, x);
  66         }
  67
  68         public static float sinh(float x)
  69         {
  70                 return (float) java.lang.Math.sinh(x);
  71         }
  72
  73         public static float cosh(float x)
  74         {
  75                 return (float) java.lang.Math.cosh(x);
  76         }
  77
  78         public static float tanh(float x)
  79         {
  80                 return (float) java.lang.Math.tanh(x);
  81         }
  82
  83         public static float arcsinh(float x)
  84         {
  85                 if(x >= 0.0)
  86                 {
  87                         return ln(x + sqrt(x * x + 1.0f));
  88                 }
  89                 else
  90                 {
  91                         return -ln(-x + sqrt(x * x + 1.0f));
  92                 }
  93         }
  94
  95         public static float arccosh(float x)
  96         {
  97                 return ln(x + sqrt(x * x - 1.0f));
  98         }
  99
 100         public static float arctanh(float x)
 101         {
 102                 return ln((1.0f + x) / (1.0f - x)) / 2.0f;
 103         }
 104 }