Math

Math

java.lang

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Java 1.0

This class defines constants for the mathematical values e and and defines static methods for floating-point trigonometry, exponentiation, and other operations. It is the equivalent of the C <math.h> functions. It also contains methods for computing minimum and maximum values and for generating pseudorandom numbers .

Most methods of Math operate on float and double floating-point values. Remember that these values are only approximations of actual real numbers. To allow implementations to take full advantage of the floating-point capabilities of a native platform, the methods of Math are not required to return exactly the same values on all platforms. In other words, the results returned by different implementations may differ slightly in the least-significant bits. As of Java 1.3, applications that require strict platform-independence of results should use StrictMath instead.

Java 5.0 adds several methods including log10( ) to compute the base-ten logarithm, cbrt( ) to compute the cube root of a number, and signum ( ) to compute the sign of a number as well as sinh( ) , cosh( ) , and tanh( ) hyperbolic trigonometric functions.

 public final class  Math  {  // No Constructor   // Public Constants  public static final double  E  ;  =2  .718281828459045      public static final double  PI  ;  =3  .141592653589793  // Public Class Methods  public static int  abs  (int  a  );        public static long  abs  (long  a  );        public static float  abs  (float  a  );        public static double  abs  (double  a  );        public static double  acos  (double  a  );        public static double  asin  (double  a  );        public static double  atan  (double  a  );        public static double  atan2  (double  y  , double  x  );  5.0  public static double  cbrt  (double  a  );        public static double  ceil  (double  a  );        public static double  cos  (double  a  );  5.0  public static double  cosh  (double  x  );        public static double  exp  (double  a  );  5.0  public static double  expm1  (double  x  );        public static double  floor  (double  a  );  5.0  public static double  hypot  (double  x  , double  y  );        public static double  IEEEremainder  (double  f1  , double  f2  );        public static double  log  (double  a  );  5.0  public static double  log10  (double  a  );  5.0  public static double  log1p  (double  x  );        public static int  max  (int  a  , int  b  );        public static long  max  (long  a  , long  b  );        public static float  max  (float  a  , float  b  );        public static double  max  (double  a  , double  b  );        public static int  min  (int  a  , int  b  );        public static long  min  (long  a  , long  b  );        public static float  min  (float  a  , float  b  );        public static double  min  (double  a  , double  b  );        public static double  pow  (double  a  , double  b  );        public static double  random  ( );        public static double  rint  (double  a  );        public static int  round  (float  a  );        public static long  round  (double  a  );  5.0  public static float  signum  (float  f  );  5.0  public static double  signum  (double  d  );        public static double  sin  (double  a  );  5.0  public static double  sinh  (double  x  );        public static double  sqrt  (double  a  );        public static double  tan  (double  a  );  5.0  public static double  tanh  (double  x  );  1.2  public static double  toDegrees  (double  angrad  );  1.2  public static double  toRadians  (double  angdeg  );  5.0  public static float  ulp  (float  f  );  5.0  public static double  ulp  (double  d  );   }