Real class abstract

Provides a common handle for all Real Numbers.

Inheritance

• Object
• Number
• Real

Implementers

• Double
• Integer
• Precise

Constructors

Real()

The default constructor.

Real.constant()

Creates a constant real number.

const

Real.fromMap(Map<String, dynamic>? m)

Constructs a instance using the value for property d (decimal) or i (integer) in Map m.

factory

Properties

hashCode → int

The hash codes for two Numbers will be equal when the represented values are equal, even if the Number subtypes are different.

no setter, inherited

isFinite → bool

Whether this Number represents a finite value.

no setter, inherited

isInfinite → bool

Whether this Number represents infinity.

no setter, override

isInteger → bool

True if the Number represents an integer value. Note that the Number does not have to be of type Integer for this to be true.

no setter, inherited

isNaN → bool

Whether this Number represents a value .

no setter, override

isNegative → bool

Whether this number is less than zero.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sign → num

Returns minus one, zero or plus one depending on the sign and numerical value of the number. Returns minus one if the number is less than zero, plus one if the number is greater than zero, and zero if the number is equal to zero. Returns NaN if the number is NaN. Returns an int if this Number's value is an integer, a double otherwise.

no setter, inherited

value → num

All Real subclasses must be able to provide their value as a dart:core num.

no setter

Methods

abs() → Number

Returns the absolute value of this Number.

override

ceil() → Number

Returns the least Number having integer components no smaller than this Number.

override

clamp(dynamic lowerLimit, dynamic upperLimit) → Number

Returns this num clamped to be in the range lowerLimit-upperLimit. The comparison is done using compareTo and therefore takes -0.0 into account. This also implies that double.NAN is treated as the maximal double value. lowerLimit and upperLimit are expected to be num or `Number' objects.

inherited

compareTo(dynamic n2) → int

Compares this Number to another Number by comparing values. n2 is expected to be a num or Number. If it is not it will be considered to have a value of 0.

inherited

floor() → Number

Returns the greatest Number with an integer value no greater than this Number. If this is not finite (NaN or infinity), throws an UnsupportedError.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

reciprocal() → Number

Returns the Number that is the reciprocal of this Number. This Number is unaffected.

override

remainder(dynamic divisor) → Number

Returns the remainder of the truncating division of this Number by divisor. The result r of this operation satisfies: this == (this ~/ other) * other + r. As a consequence the remainder r has the same sign as the operator /(divisor).

override

round() → Number

Returns the integer Number closest to this Number. Rounds away from zero when there is no closest integer: (3.5).round() == 4 and (-3.5).round() == -4. If this is not finite (NaN or infinity), throws an UnsupportedError.

override

toDouble() → double

Converts this Number to a dart:core double.

override

toInt() → int

Converts this Number to a dart:core int.

override

toJson() → Map<String, dynamic>

Subclasses must support dart:json for stringify.

inherited

toString() → String

A string representation of this object.

override

truncate() → Number

Returns a truncated value.

override

Operators

operator %(dynamic divisor) → Number

The modulo operator. Imaginary and Complex divisors are nor supported and will throw an Exception.

override

operator *(dynamic multiplicand) → Number

Returns the product of this Number and the multiplicand (a Number or num). This Number is unaffected.

override

operator +(dynamic addend) → Number

Addition operator.

override

operator -(dynamic subtrahend) → Number

Returns the difference of this Number and the subtrahend (a Number or num). This Number is unaffected.

override

operator /(dynamic divisor) → Number

Returns the quotient of this Number divided by the divisor (a Number or num). This Number is unaffected.

override

operator <(dynamic obj) → bool

Returns whether the value of this Number is less than the value of obj (a Number or num).

override

operator <=(dynamic obj) → bool

Returns whether the value of this Number is less than or equal to the value of obj (a Number or num).

override

operator ==(dynamic obj) → bool

Two Numbers will be equal when the represented values are equal, even if the Number subtypes are different.

inherited

operator >(dynamic obj) → bool

Returns whether the value of this Number is greater than the value of obj (a Number or num).

override

operator >=(dynamic obj) → bool

Returns whether the value of this Number is greater than or equal to the value of obj (a Number or num).

override

operator ^(dynamic exponent) → Number

The power operator (note: NOT bitwise XOR).

override

operator unary-() → Real

Negation operator.

override

operator ~/(dynamic divisor) → Number

The truncating division operator. When dividing by an Imaginary or Complex number, the result will contain an imaginary component. The imaginary component is not truncated; only the real portion of the result is truncated.

override