# Java.lang.Math Class

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## Introduction

The **java.lang.Math** class contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions.

## Class declaration

Following is the declaration for **java.lang.Math** class:

public final class Math extends Object

## Field

Following are the fields for **java.lang.Math** class:

**static double E**-- This is the double value that is closer than any other to e, the base of the natural logarithms.**static double PI**-- This is the double value that is closer than any other to pi, the ratio of the circumference of a circle to its diameter.

## Class methods

S.N. | Method & Description |
---|---|

1 | static double abs(double a) This method returns the absolute value of a double value. |

2 | static float abs(float a) This method returns the absolute value of a float value. |

3 | static int abs(int a) This method returns the absolute value of an int value. |

4 | static long abs(long a) This method returns the absolute value of a long value. |

5 | static double acos(double a) This method returns the arc cosine of a value; the returned angle is in the range 0.0 through pi. |

6 | static double asin(double a) This method returns the arc sine of a value; the returned angle is in the range -pi/2 through pi/2. |

7 | static double atan(double a) This method returns the arc tangent of a value; the returned angle is in the range -pi/2 through pi/2. |

8 | static double atan2(double y, double x) This method returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta). |

9 | static double cbrt(double a) This method returns the cube root of a double value. |

10 | static double ceil(double a) This method returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer. |

11 | static double copySign(double magnitude, double sign) This method returns the first floating-point argument with the sign of the second floating-point argument. |

12 | static float copySign(float magnitude, float sign) This method returns the first floating-point argument with the sign of the second floating-point argument. |

13 | static double cos(double a) This method returns the trigonometric cosine of an angle. |

14 | static double cosh(double x) This method returns the hyperbolic cosine of a double value. |

15 | static double exp(double a) This method returns Euler's number e raised to the power of a double value. |

16 | static double expm1(double x) This method returns e ^{x} -1. |

17 | static double floor(double a) This method returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer. |

18 | static int getExponent(double d) This method returns the unbiased exponent used in the representation of a double. |

19 | static int getExponent(float f) This method returns the unbiased exponent used in the representation of a float. |

20 | static double hypot(double x, double y) This method returns sqrt(x ^{2} +y^{2}) without intermediate overflow or underflow. |

21 | static double IEEEremainder(double f1, double f2) This method computes the remainder operation on two arguments as prescribed by the IEEE 754 standard. |

22 | static double log(double a) This method returns the natural logarithm (base e) of a double value. |

23 | static double log10(double a) This method returns the base 10 logarithm of a double value. |

24 | static double log1p(double x) This method returns the natural logarithm of the sum of the argument and 1. |

25 | static double max(double a, double b) This method returns the greater of two double values. |

26 | static float max(float a, float b) This method returns the greater of two float values. |

27 | static int max(int a, int b) This method returns the greater of two int values. |

28 | static long max(long a, long b) This method returns the greater of two long values. |

29 | static double min(double a, double b) This method returns the smaller of two double values. |

30 | static float min(float a, float b) This method returns the smaller of two float values. |

31 | static int min(int a, int b) This method returns the smaller of two int values. |

32 | static long min(long a, long b) This method returns the smaller of two long values. |

33 | static double nextAfter(double start, double direction) This method returns the floating-point number adjacent to the first argument in the direction of the second argument. |

34 | static float nextAfter(float start, double direction) This method returns the floating-point number adjacent to the first argument in the direction of the second argument. |

35 | static double nextUp(double d) This method returns the floating-point value adjacent to d in the direction of positive infinity. |

36 | static float nextUp(float f) This method returns the floating-point value adjacent to f in the direction of positive infinity. |

37 | static double pow(double a, double b) This method returns the value of the first argument raised to the power of the second argument. |

38 | static double random() This method returns a double value with a positive sign, greater than or equal to 0.0 and less than 1.0. |

39 | static double rint(double a) This method returns the double value that is closest in value to the argument and is equal to a mathematical integer. |

40 | static long round(double a) This method returns the closest long to the argument. |

41 | static int round(float a) This method returns the closest int to the argument. |

42 | static double scalb(double d, int scaleFactor) This method returns d × 2 ^{scaleFactor} rounded as if performed by a single correctly rounded floating-point multiply to a member of the double value set. |

43 | static float scalb(float f, int scaleFactor) This method return f × 2 ^{scaleFactor} rounded as if performed by a single correctly rounded floating-point multiply to a member of the float value set. |

44 | static double signum(double d) This method returns the signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero. |

45 | static float signum(float f) This method returns the signum function of the argument; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero. |

46 | static double sin(double a) This method returns the hyperbolic sine of a double value. |

47 | static double sinh(double x) This method Returns the hyperbolic sine of a double value. |

48 | static double sqrt(double a) This method returns the correctly rounded positive square root of a double value. |

49 | static double tan(double a) This method returns the trigonometric tangent of an angle.r |

50 | static double tanh(double x) This method returns the hyperbolic tangent of a double value. |

51 | static double toDegrees(double angrad) This method converts an angle measured in radians to an approximately equivalent angle measured in degrees. |

52 | static double toRadians(double angdeg) This method converts an angle measured in degrees to an approximately equivalent angle measured in radians. |

53 | static double ulp(double d) This method returns the size of an ulp of the argument. |

54 | static double ulp(float f) This method returns the size of an ulp of the argument. |

## Methods inherited

This class inherits methods from the following classes:

java.lang.Object