Scala 3/scala.math/Fractional

Fractional

trait Fractional[T] extends Numeric[T]
Companion:
object
Source:
Fractional.scala
trait Numeric[T]
trait Ordering[T]
trait Equiv[T]
trait Comparator[T]
class Object
trait Matchable
class Any
object DoubleIsFractional.type
object FloatIsFractional.type

Type members

Classlikes

class FractionalOps(lhs: T) extends NumericOps

Inherited classlikes

class NumericOps(lhs: T)
Inherited from:
Numeric
Source:
Numeric.scala
class OrderingOps(lhs: T)

This inner class defines comparison operators available for T.

This inner class defines comparison operators available for T.

It can't extend AnyVal because it is not a top-level class or a member of a statically accessible object.

Inherited from:
Ordering
Source:
Ordering.scala

Value members

Abstract methods

def div(x: T, y: T): T

Inherited methods

def abs(x: T): T
Inherited from:
Numeric
Source:
Numeric.scala
def compare(x: T, y: T): 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)

Inherited from:
Ordering
Source:
Ordering.scala
override def equiv(x: T, y: T): Boolean

Return true if x == y in the ordering.

Return true if x == y in the ordering.

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
def fromInt(x: Int): T
Inherited from:
Numeric
Source:
Numeric.scala
override def gt(x: T, y: T): Boolean

Return true if x > y in the ordering.

Return true if x > y in the ordering.

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
override def gteq(x: T, y: T): Boolean

Return true if x >= y in the ordering.

Return true if x >= y in the ordering.

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
def isReverseOf(other: Ordering[_]): Boolean

Returns whether or not the other ordering is the opposite ordering of this one.

Returns whether or not the other ordering is the opposite ordering of this one.

Equivalent to other == this.reverse.

Implementations should only override this method if they are overriding reverse as well.

Inherited from:
Ordering
Source:
Ordering.scala
override def lt(x: T, y: T): Boolean

Return true if x < y in the ordering.

Return true if x < y in the ordering.

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
override def lteq(x: T, y: T): Boolean

Return true if x <= y in the ordering.

Return true if x <= y in the ordering.

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
def max[U <: T](x: U, y: U): U

Return x if x >= y, otherwise y.

Return x if x >= y, otherwise y.

Inherited from:
Ordering
Source:
Ordering.scala
def min[U <: T](x: U, y: U): U

Return x if x <= y, otherwise y.

Return x if x <= y, otherwise y.

Inherited from:
Ordering
Source:
Ordering.scala
def minus(x: T, y: T): T
Inherited from:
Numeric
Source:
Numeric.scala
def negate(x: T): T
Inherited from:
Numeric
Source:
Numeric.scala
def on[U](f: U => T): 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))
Inherited from:
Ordering
Source:
Ordering.scala
def one: T
Inherited from:
Numeric
Source:
Numeric.scala
def orElse(other: Ordering[T]): Ordering[T]

Creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else the result of others compare function.

Creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else the result of others compare function.

Value parameters:
other

an Ordering to use if this Ordering returns zero

Example:

case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
                          .orElse(Ordering.by[Pair, Int](_.b))
Inherited from:
Ordering
Source:
Ordering.scala
def orElseBy[S](f: T => S)(implicit ord: Ordering[S]): Ordering[T]

Given f, a function from T into S, creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else a result equivalent to:

Given f, a function from T into S, creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else a result equivalent to:

Ordering[S].compare(f(x), f(y))

This function is equivalent to passing the result of Ordering.by(f) to orElse.

Example:

case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
                          .orElseBy[Int](_.b)
Inherited from:
Ordering
Source:
Ordering.scala
def parseString(str: String): Option[T]
Inherited from:
Numeric
Source:
Numeric.scala
def plus(x: T, y: T): T
Inherited from:
Numeric
Source:
Numeric.scala
override def reverse: Ordering[T]

Return the opposite ordering of this one.

Return the opposite ordering of this one.

Implementations overriding this method MUST override isReverseOf as well if they change the behavior at all (for example, caching does not require overriding it).

Definition Classes
Inherited from:
Ordering
Source:
Ordering.scala
def reversed(): Comparator[T]
Inherited from:
Comparator
def sign(x: T): T
Inherited from:
Numeric
Source:
Numeric.scala
def thenComparing[U <: Comparable[_ >: U <: <FromJavaObject>]](x$0: Function[_ >: T <: <FromJavaObject>, _ <: U]): Comparator[T]
Inherited from:
Comparator
def thenComparing[U <: <FromJavaObject>](x$0: Function[_ >: T <: <FromJavaObject>, _ <: U], x$1: Comparator[_ >: U <: <FromJavaObject>]): Comparator[T]
Inherited from:
Comparator
def thenComparing(x$0: Comparator[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from:
Comparator
def thenComparingDouble(x$0: ToDoubleFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from:
Comparator
def thenComparingInt(x$0: ToIntFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from:
Comparator
def thenComparingLong(x$0: ToLongFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from:
Comparator
def times(x: T, y: T): T
Inherited from:
Numeric
Source:
Numeric.scala
def toDouble(x: T): Double
Inherited from:
Numeric
Source:
Numeric.scala
def toFloat(x: T): Float
Inherited from:
Numeric
Source:
Numeric.scala
def toInt(x: T): Int
Inherited from:
Numeric
Source:
Numeric.scala
def toLong(x: T): Long
Inherited from:
Numeric
Source:
Numeric.scala
def tryCompare(x: T, y: T): Option[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).

Inherited from:
Ordering
Source:
Ordering.scala
def zero: T
Inherited from:
Numeric
Source:
Numeric.scala

Deprecated and Inherited methods

def signum(x: T): Int
Deprecated
[Since version 2.13.0]
Inherited from:
Numeric
Source:
Numeric.scala

Implicits

Implicits

implicit override def mkNumericOps(lhs: T): FractionalOps
Definition Classes
Source:
Fractional.scala

Inherited implicits

implicit def mkOrderingOps(lhs: T): OrderingOps

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.

Inherited from:
Ordering
Source:
Ordering.scala