Rational class

A number that can be expressed as a fraction of two integers, a numerator and a non-zero denominator.

This fraction is stored in its canonical form. The canonical form is the rational number expressed in a unique way as an irreducible fraction a/b, where a and b are coprime integers and b > 0.

Rational(2, 4) corresponding to 2/4 will be created with its canonical form 1/2. That means Rational(2, 4).numerator will be equal to 1 and Rational(2, 4).denominator equal to 2.

Implemented types

Comparable<Rational>

Constructors

Rational(BigInt numerator, [BigInt? denominator]): Create a new rational number from its numerator and a non-zero denominator.
factory
Rational.fromInt(int numerator, [int denominator = 1]): Create a new rational number from its numerator and a non-zero denominator.
factory

Properties

denominator → BigInt: The denominator of this rational number.
final
hashCode → int: The hash code for this object.
no setteroverride
inverse → Rational: Returns the Rational denominator/numerator.
no setter
isInteger → bool: Returns true if this is an integer.
no setter
numerator → BigInt: The numerator of this rational number.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
signum → int: The signum function value of this.
no setter

Methods

abs() → Rational: Returns the absolute value of this.
ceil() → BigInt: Returns the least BigInt value that is no smaller than this Rational.
clamp(Rational lowerLimit, Rational upperLimit) → Rational: Clamps this to be in the range lowerLimit-upperLimit.
compareTo(Rational other) → int: Compares this object to another object.
override
floor() → BigInt: Returns the greatest BigInt value no greater than this Rational.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
pow(int exponent) → Rational: Returns this to the power of exponent.
remainder(Rational other) → Rational: Returns the remainder from dividing this Rational by other.
round() → BigInt: Returns the BigInt value closest to this number.
toBigInt() → BigInt: The BigInt obtained by discarding any fractional digits from this.
toDouble() → double: Returns this as a double.
toString() → String: A string representation of this object.
override
truncate() → BigInt: The BigInt obtained by discarding any fractional digits from this.

Operators

operator %(Rational other) → Rational: Euclidean modulo operator.
operator *(Rational other) → Rational: Multiplication operator.
operator +(Rational other) → Rational: Addition operator.
operator -(Rational other) → Rational: Subtraction operator.
operator /(Rational other) → Rational: Division operator.
operator <(Rational other) → bool: Whether this number is numerically smaller than other.
operator <=(Rational other) → bool: Whether this number is numerically smaller than or equal to other.
operator ==(Object other) → bool: The equality operator.
override
operator >(Rational other) → bool: Whether this number is numerically greater than other.
operator >=(Rational other) → bool: Whether this number is numerically greater than or equal to other.
operator unary-() → Rational: Returns the negative value of this rational.
operator ~/(Rational other) → BigInt: Truncating division operator.

Static Properties

one → Rational: The rational number corresponding to 1.
final
zero → Rational: The rational number corresponding to 0.
final

Static Methods

parse(String source) → Rational: Parses source as a decimal literal and returns its value as Rational.
tryParse(String source) → Rational?: Parses source as a decimal literal and returns its value as Rational.