Scala Standard Library2.12.21 < Back
 

# Packages

-  package root

  This is the documentation for the Scala standard library.

  This is the documentation for the Scala standard library.

  #### Package structure

  The scala package contains core types like `Int`, `Float`, `Array` or `Option` which are accessible in all Scala compilation units without explicit qualification or imports.

  Notable packages include:

  - `scala.collection` and its sub-packages contain Scala's collections framework
    - `scala.collection.immutable` - Immutable, sequential data-structures such as `Vector`, `List`, `Range`, `HashMap` or `HashSet`
    - `scala.collection.mutable` - Mutable, sequential data-structures such as `ArrayBuffer`, `StringBuilder`, `HashMap` or `HashSet`
    - `scala.collection.concurrent` - Mutable, concurrent data-structures such as `TrieMap`
    - `scala.collection.parallel.immutable` - Immutable, parallel data-structures such as `ParVector`, `ParRange`, `ParHashMap` or `ParHashSet`
    - `scala.collection.parallel.mutable` - Mutable, parallel data-structures such as `ParArray`, `ParHashMap`, `ParTrieMap` or `ParHashSet`
  - `scala.concurrent` - Primitives for concurrent programming such as `Futures` and `Promises`
  - `scala.io` - Input and output operations
  - `scala.math` - Basic math functions and additional numeric types like `BigInt` and `BigDecimal`
  - `scala.sys` - Interaction with other processes and the operating system
  - `scala.util.matching` - Regular expressions

  Other packages exist. See the complete list on the right.

  Additional parts of the standard library are shipped as separate libraries. These include:

  - `scala.reflect` - Scala's reflection API (scala-reflect.jar)
  - `scala.xml` - XML parsing, manipulation, and serialization (scala-xml.jar)
  - `scala.swing` - A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)
  - `scala.util.parsing` - Parser combinators (scala-parser-combinators.jar)

  #### Automatic imports

  Identifiers in the scala package and the `scala.Predef` object are always in scope by default.

  Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example, `List` is an alias for `scala.collection.immutable.List`.

  Other aliases refer to classes provided by the underlying platform. For example, on the JVM, `String` is an alias for `java.lang.String`.

  Definition Classes
    root
-  package scala

  Core Scala types.

  Core Scala types. They are always available without an explicit import.

  Definition Classes
    root
-  package math

  The package object `scala.math` contains methods for performing basic numeric operations such as elementary exponential, logarithmic, root and trigonometric functions.

  The package object `scala.math` contains methods for performing basic numeric operations such as elementary exponential, logarithmic, root and trigonometric functions.

  All methods forward to java.lang.Math unless otherwise noted.

  Definition Classes
    scala
  See also

    java.lang.Math

-  object Numeric extends Serializable

  Definition Classes
    math
  Since

    2.8

- BigDecimalAsIfIntegral
- BigDecimalIsConflicted
- BigDecimalIsFractional
- BigIntIsIntegral
- ByteIsIntegral
- CharIsIntegral
- DoubleAsIfIntegral
- DoubleIsConflicted
- DoubleIsFractional
- ExtraImplicits
- FloatAsIfIntegral
- FloatIsConflicted
- FloatIsFractional
- Implicits
- IntIsIntegral
- LongIsIntegral
- ShortIsIntegral

o

scala.math.Numeric

# FloatAsIfIntegral 

###
Companion trait FloatAsIfIntegral

#### object FloatAsIfIntegral extends FloatAsIfIntegral with FloatOrdering

Source
  Numeric.scala

Linear Supertypes
FloatOrdering, FloatAsIfIntegral, Integral[Float], FloatIsConflicted, Numeric[Float], Ordering[Float], PartialOrdering[Float], Equiv[Float], Serializable, java.io.Serializable, Comparator[Float], AnyRef, Any
 
Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. FloatAsIfIntegral
2. FloatOrdering
3. FloatAsIfIntegral
4. Integral
5. FloatIsConflicted
6. Numeric
7. Ordering
8. PartialOrdering
9. Equiv
10. Serializable
11. Serializable
12. Comparator
13. AnyRef
14. Any

1. Hide All
2. Show All

Visibility

1. Public
2. All

### Type Members

1.  class IntegralOps extends Ops
   Definition Classes
     Integral
2.  class Ops extends AnyRef
   Definition Classes
     Numeric

### Value Members

1.  final def !=(arg0: Any): Boolean

   Test two objects for inequality.

   Test two objects for inequality.

   returns

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

   Definition Classes
     AnyRef → Any
2.  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
     AnyRef → Any
3.  final def ==(arg0: Any): Boolean

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   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
     AnyRef → Any
4.  def abs(x: Float): Float
   Definition Classes
     FloatIsConflicted → Numeric
5.  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`.

6.  def clone(): AnyRef

   Create a copy of the receiver object.

   Create a copy of the receiver object.

   The default implementation of the `clone` method is platform dependent.

   returns

     a copy of the receiver object.

   Attributes
     protected[lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... ) @native()
   Note

     not specified by SLS as a member of AnyRef

7.  def compare(x: Float, y: Float): Int

   Returns an integer whose sign communicates how x compares to y.

   Returns an integer whose sign communicates how x compares to y.

   The result sign has the following meaning:

   - negative if x < y
   - positive if x > y
   - zero otherwise (if x == y)
   Definition Classes
     FloatOrdering → Ordering → Comparator
8.  final def eq(arg0: AnyRef): Boolean

   Tests whether the argument (`that`) is a reference to the receiver object (`this`).

   Tests whether the argument (`that`) is a reference to the receiver object (`this`).

   The `eq` method implements an equivalence relation on non-null instances of `AnyRef`, and has three additional properties:

   - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
   - For any non-null instance `x` of type `AnyRef`, `x.eq(null)` and `null.eq(x)` returns `false`.
   - `null.eq(null)` returns `true`.

   When overriding the `equals` or `hashCode` methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (`o1 eq o2`), they should be equal to each other (`o1 == o2`) and they should hash to the same value (`o1.hashCode == o2.hashCode`).

   returns

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

   Definition Classes
     AnyRef
9.  def equals(arg0: Any): Boolean

   The equality method for reference types.

   The equality method for reference types. Default implementation delegates to `eq`.

   See also `equals` in scala.Any.

   returns

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

   Definition Classes
     AnyRef → Any
10.  def equiv(x: Float, y: Float): Boolean

    Return true if `x` == `y` in the ordering.

    Return true if `x` == `y` in the ordering.

    Definition Classes
      FloatOrdering → Ordering → PartialOrdering → Equiv
11.  def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the `finalize` method is invoked, as well as the interaction between `finalize` and non-local returns and exceptions, are all platform dependent.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
    Note

      not specified by SLS as a member of AnyRef

12.  def fromInt(x: Int): Float
    Definition Classes
      FloatIsConflicted → Numeric
13.  final def getClass(): Class[_]

    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
      AnyRef → Any
    Annotations
      @native()
14.  def gt(x: Float, y: Float): Boolean

    Return true if `x` > `y` in the ordering.

    Return true if `x` > `y` in the ordering.

    Definition Classes
      FloatOrdering → Ordering → PartialOrdering
15.  def gteq(x: Float, y: Float): Boolean

    Return true if `x` >= `y` in the ordering.

    Return true if `x` >= `y` in the ordering.

    Definition Classes
      FloatOrdering → Ordering → PartialOrdering
16.  def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

      the hash code value for this object.

    Definition Classes
      AnyRef → Any
    Annotations
      @native()
17.  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
18.  def lt(x: Float, y: Float): Boolean

    Return true if `x` < `y` in the ordering.

    Return true if `x` < `y` in the ordering.

    Definition Classes
      FloatOrdering → Ordering → PartialOrdering
19.  def lteq(x: Float, y: Float): Boolean

    Return true if `x` <= `y` in the ordering.

    Return true if `x` <= `y` in the ordering.

    Definition Classes
      FloatOrdering → Ordering → PartialOrdering
20.  def max(x: Float, y: Float): Float

    Return `x` if `x` >= `y`, otherwise `y`.

    Return `x` if `x` >= `y`, otherwise `y`.

    Definition Classes
      FloatOrdering → Ordering
21.  def min(x: Float, y: Float): Float

    Return `x` if `x` <= `y`, otherwise `y`.

    Return `x` if `x` <= `y`, otherwise `y`.

    Definition Classes
      FloatOrdering → Ordering
22.  def minus(x: Float, y: Float): Float
    Definition Classes
      FloatIsConflicted → Numeric
23.  implicit def mkNumericOps(lhs: Float): IntegralOps
    Definition Classes
      Integral → Numeric
24.  implicit def mkOrderingOps(lhs: Float): FloatAsIfIntegral.Ops

    This implicit method augments `T` with the comparison operators defined in `scala.math.Ordering.Ops`.

    This implicit method augments `T` with the comparison operators defined in `scala.math.Ordering.Ops`.

    Definition Classes
      Ordering
25.  final def ne(arg0: AnyRef): Boolean

    Equivalent to `!(this eq that)`.

    Equivalent to `!(this eq that)`.

    returns

      `true` if the argument is not a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef
26.  def negate(x: Float): Float
    Definition Classes
      FloatIsConflicted → Numeric
27.  final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Annotations
      @native()
    Note

      not specified by SLS as a member of AnyRef

28.  final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Annotations
      @native()
    Note

      not specified by SLS as a member of AnyRef

29.  def on[U](f: (U) ⇒ Float): Ordering[U]

    Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:

    Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:

        def compare(x:U, y:U) = Ordering[T].compare(f(x), f(y))

    Definition Classes
      Ordering
30.  def one: Float
    Definition Classes
      Numeric
31.  def plus(x: Float, y: Float): Float
    Definition Classes
      FloatIsConflicted → Numeric
32.  def quot(x: Float, y: Float): Float
    Definition Classes
      FloatAsIfIntegral → Integral
33.  def rem(x: Float, y: Float): Float
    Definition Classes
      FloatAsIfIntegral → Integral
34.  def reverse: Ordering[Float]

    Return the opposite ordering of this one.

    Return the opposite ordering of this one.

    Definition Classes
      Ordering → PartialOrdering
35.  def reversed(): Comparator[Float]
    Definition Classes
      Comparator
36.  def signum(x: Float): Int
    Definition Classes
      Numeric
37.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
38.  def thenComparing[U <: Comparable[_ >: U]](arg0: java.util.function.Function[_ >: Float, _ <: U]): Comparator[Float]
    Definition Classes
      Comparator
39.  def thenComparing[U](arg0: java.util.function.Function[_ >: Float, _ <: U], arg1: Comparator[_ >: U]): Comparator[Float]
    Definition Classes
      Comparator
40.  def thenComparing(arg0: Comparator[_ >: Float]): Comparator[Float]
    Definition Classes
      Comparator
41.  def thenComparingDouble(arg0: ToDoubleFunction[_ >: Float]): Comparator[Float]
    Definition Classes
      Comparator
42.  def thenComparingInt(arg0: ToIntFunction[_ >: Float]): Comparator[Float]
    Definition Classes
      Comparator
43.  def thenComparingLong(arg0: ToLongFunction[_ >: Float]): Comparator[Float]
    Definition Classes
      Comparator
44.  def times(x: Float, y: Float): Float
    Definition Classes
      FloatIsConflicted → Numeric
45.  def toDouble(x: Float): Double
    Definition Classes
      FloatIsConflicted → Numeric
46.  def toFloat(x: Float): Float
    Definition Classes
      FloatIsConflicted → Numeric
47.  def toInt(x: Float): Int
    Definition Classes
      FloatIsConflicted → Numeric
48.  def toLong(x: Float): Long
    Definition Classes
      FloatIsConflicted → Numeric
49.  def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

      a String representation of the object.

    Definition Classes
      AnyRef → Any
50.  def tryCompare(x: Float, y: Float): Some[Int]

    Returns whether a comparison between `x` and `y` is defined, and if so the result of `compare(x, y)`.

    Returns whether a comparison between `x` and `y` is defined, and if so the result of `compare(x, y)`.

    Definition Classes
      Ordering → PartialOrdering
51.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
52.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
53.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
54.  def zero: Float
    Definition Classes
      Numeric

### Inherited from FloatOrdering

### Inherited from FloatAsIfIntegral

### Inherited from Integral[Float]

### Inherited from FloatIsConflicted

### Inherited from Numeric[Float]

### Inherited from Ordering[Float]

### Inherited from PartialOrdering[Float]

### Inherited from Equiv[Float]

### Inherited from Serializable

### Inherited from java.io.Serializable

### Inherited from Comparator[Float]

### Inherited from AnyRef

### Inherited from Any

### Ungrouped