scala

# Double

#### final class Double extends AnyVal

`Double`, a 64-bit IEEE-754 floating point number (equivalent to Java's `double` primitive type) is a subtype of AnyVal. Instances of `Double` are not represented by an object in the underlying runtime system.

There is an implicit conversion from Double => RichDouble which provides useful non-primitive operations.

Source
  Double.scala

Linear Supertypes
AnyVal, Any
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1. Double
2. AnyVal
3. Any

Visibility

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### Value Members

1. #### def !=(x: Double): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

2. #### def !=(x: Float): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

3. #### def !=(x: Long): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

4. #### def !=(x: Int): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

5. #### def !=(x: Char): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

6. #### def !=(x: Short): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

7. #### def !=(x: Byte): Boolean

   returns

     `true` if this value is not equal to x, `false` otherwise

8. #### final def !=(arg0: Any): Boolean

   Test two objects for inequality.

   Test two objects for inequality.

   returns

     `true` if !(this == that), false otherwise.

   Definition Classes
     Any

9. #### final def ##(): Int

   Equivalent to `x.hashCode` except for boxed numeric types and `null`.

   Equivalent to `x.hashCode` except for boxed numeric types and `null`. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For `null` returns a hashcode where `null.hashCode` throws a `NullPointerException`.

   returns

     a hash value consistent with ==

   Definition Classes
     Any

10. #### def %(x: Double): Double

    returns

      the remainder of the division of this value by x

11. #### def %(x: Float): Double

    returns

      the remainder of the division of this value by x

12. #### def %(x: Long): Double

    returns

      the remainder of the division of this value by x

13. #### def %(x: Int): Double

    returns

      the remainder of the division of this value by x

14. #### def %(x: Char): Double

    returns

      the remainder of the division of this value by x

15. #### def %(x: Short): Double

    returns

      the remainder of the division of this value by x

16. #### def %(x: Byte): Double

    returns

      the remainder of the division of this value by x

17. #### def *(x: Double): Double

    returns

      the product of this value and x

18. #### def *(x: Float): Double

    returns

      the product of this value and x

19. #### def *(x: Long): Double

    returns

      the product of this value and x

20. #### def *(x: Int): Double

    returns

      the product of this value and x

21. #### def *(x: Char): Double

    returns

      the product of this value and x

22. #### def *(x: Short): Double

    returns

      the product of this value and x

23. #### def *(x: Byte): Double

    returns

      the product of this value and x

24. #### def +(x: Double): Double

    returns

      the sum of this value and x

25. #### def +(x: Float): Double

    returns

      the sum of this value and x

26. #### def +(x: Long): Double

    returns

      the sum of this value and x

27. #### def +(x: Int): Double

    returns

      the sum of this value and x

28. #### def +(x: Char): Double

    returns

      the sum of this value and x

29. #### def +(x: Short): Double

    returns

      the sum of this value and x

30. #### def +(x: Byte): Double

    returns

      the sum of this value and x

31. #### def +(x: String): String

32. #### def -(x: Double): Double

    returns

      the difference of this value and x

33. #### def -(x: Float): Double

    returns

      the difference of this value and x

34. #### def -(x: Long): Double

    returns

      the difference of this value and x

35. #### def -(x: Int): Double

    returns

      the difference of this value and x

36. #### def -(x: Char): Double

    returns

      the difference of this value and x

37. #### def -(x: Short): Double

    returns

      the difference of this value and x

38. #### def -(x: Byte): Double

    returns

      the difference of this value and x

39. #### def /(x: Double): Double

    returns

      the quotient of this value and x

40. #### def /(x: Float): Double

    returns

      the quotient of this value and x

41. #### def /(x: Long): Double

    returns

      the quotient of this value and x

42. #### def /(x: Int): Double

    returns

      the quotient of this value and x

43. #### def /(x: Char): Double

    returns

      the quotient of this value and x

44. #### def /(x: Short): Double

    returns

      the quotient of this value and x

45. #### def /(x: Byte): Double

    returns

      the quotient of this value and x

46. #### def <(x: Double): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

47. #### def <(x: Float): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

48. #### def <(x: Long): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

49. #### def <(x: Int): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

50. #### def <(x: Char): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

51. #### def <(x: Short): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

52. #### def <(x: Byte): Boolean

    returns

      `true` if this value is less than x, `false` otherwise

53. #### def <=(x: Double): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

54. #### def <=(x: Float): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

55. #### def <=(x: Long): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

56. #### def <=(x: Int): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

57. #### def <=(x: Char): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

58. #### def <=(x: Short): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

59. #### def <=(x: Byte): Boolean

    returns

      `true` if this value is less than or equal to x, `false` otherwise

60. #### def ==(x: Double): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

61. #### def ==(x: Float): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

62. #### def ==(x: Long): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

63. #### def ==(x: Int): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

64. #### def ==(x: Char): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

65. #### def ==(x: Short): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

66. #### def ==(x: Byte): Boolean

    returns

      `true` if this value is equal x, `false` otherwise

67. #### final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality. The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

    returns

      `true` if the receiver object is equivalent to the argument; `false` otherwise.

    Definition Classes
      Any

68. #### def >(x: Double): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

69. #### def >(x: Float): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

70. #### def >(x: Long): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

71. #### def >(x: Int): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

72. #### def >(x: Char): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

73. #### def >(x: Short): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

74. #### def >(x: Byte): Boolean

    returns

      `true` if this value is greater than x, `false` otherwise

75. #### def >=(x: Double): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

76. #### def >=(x: Float): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

77. #### def >=(x: Long): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

78. #### def >=(x: Int): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

79. #### def >=(x: Char): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

80. #### def >=(x: Short): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

81. #### def >=(x: Byte): Boolean

    returns

      `true` if this value is greater than or equal to x, `false` otherwise

82. #### final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type `T0`.

    Cast the receiver object to be of type `T0`.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression `1.asInstanceOf[String]` will throw a `ClassCastException` at runtime, while the expression `List(1).asInstanceOf[List[String]]` will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

      the receiver object.

    Definition Classes
      Any
    Exceptions thrown
      ClassCastException

      if the receiver object is not an instance of the erasure of type `T0`.

83. #### def equals(arg0: Any): Boolean

    Compares the receiver object (`this`) with the argument object (`that`) for equivalence.

    Compares the receiver object (`this`) with the argument object (`that`) for equivalence.

    Any implementation of this method should be an equivalence relation:

    - It is reflexive: for any instance `x` of type `Any`, `x.equals(x)` should return `true`.
    - It is symmetric: for any instances `x` and `y` of type `Any`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`.
    - It is transitive: for any instances `x`, `y`, and `z` of type `AnyRef` if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is usually necessary to override `hashCode` to ensure that objects which are "equal" (`o1.equals(o2)` returns `true`) hash to the same Int. (`o1.hashCode.equals(o2.hashCode)`).

    returns

      `true` if the receiver object is equivalent to the argument; `false` otherwise.

    Definition Classes
      Any

84. #### def getClass(): Class[Double]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

      a class object corresponding to the runtime type of the receiver.

    Definition Classes
      Double → Any

85. #### def hashCode(): Int

    Calculate a hash code value for the object.

    Calculate a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (`o1.hashCode.equals(o2.hashCode)`) yet not be equal (`o1.equals(o2)` returns `false`). A degenerate implementation could always return `0`. However, it is required that if two objects are equal (`o1.equals(o2)` returns `true`) that they have identical hash codes (`o1.hashCode.equals(o2.hashCode)`). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the `equals` method.

    returns

      the hash code value for this object.

    Definition Classes
      Any

86. #### final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is `T0`.

    Test whether the dynamic type of the receiver object is `T0`.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression `1.isInstanceOf[String]` will return `false`, while the expression `List(1).isInstanceOf[List[String]]` will return `true`. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

      `true` if the receiver object is an instance of erasure of type `T0`; `false` otherwise.

    Definition Classes
      Any

87. #### def toByte: Byte

88. #### def toChar: Char

89. #### def toDouble: Double

90. #### def toFloat: Float

91. #### def toInt: Int

92. #### def toLong: Long

93. #### def toShort: Short

94. #### def toString(): String

    Returns a string representation of the object.

    Returns a string representation of the object.

    The default representation is platform dependent.

    returns

      a string representation of the object.

    Definition Classes
      Any

95. #### def unary_+: Double

    returns

      this value, unmodified

96. #### def unary_-: Double

    returns

      the negation of this value

### Inherited from AnyVal

### Inherited from Any