A double-precision floating point number.

Representation of Dart doubles containing double specific constants and operations and specializations of operations inherited from num. Dart doubles are 64-bit floating-point numbers as specified in the IEEE 754 standard.

The double type is contagious. Operations on doubles return double results.

It is a compile-time error for a class to attempt to extend or implement double.

Inheritance

## Constants

double INFINITY = 1.0 / 0.0
const

double MAX_FINITE = 1.7976931348623157e+308
const

double MIN_POSITIVE = 5e-324
const

double NAN = 0.0 / 0.0
const

double NEGATIVE_INFINITY = -INFINITY
const

## Static Methods

parse(String source, [double onError(String source)]) → double

Parse `source` as an double literal and return its value.

## Properties

isFinite bool

True if the number is finite; otherwise, false.

isInfinite bool

True if the number is positive infinity or negative infinity; otherwise, false.

isNaN bool

True if the number is the double Not-a-Number value; otherwise, false.

isNegative bool

True if the number is negative; otherwise, false.

sign

Returns the sign of the double's numerical value.

double()

## Operators

operator %(num other) → double

Euclidean modulo operator.

operator *(num other) → double

Multiplication operator.

operator +(num other) → double

operator -(num other) → double

Subtraction operator.

operator /(num other) → double

Division operator.

operator <(num other) → bool
inherited

Relational less than operator.

operator <=(num other) → bool
inherited

Relational less than or equal operator.

operator ==(Object other) → bool
inherited

Test whether this value is numerically equal to `other`.

operator >(num other) → bool
inherited

Relational greater than operator.

operator >=(num other) → bool
inherited

Relational greater than or equal operator.

operator unary-() → double

Negate operator.

operator ~/(num other) → int

Truncating division operator.

## Methods

abs() → double

Returns the absolute value of this double.

ceil() → int

Returns the least integer no smaller than `this`.

ceilToDouble() → double

Returns the least integer double value no smaller than `this`.

clamp(num lowerLimit, num upperLimit) → num
inherited

Returns this num clamped to be in the range `lowerLimit`-`upperLimit`.

compareTo(num other) → int
inherited

Compares this to `other`.

floor() → int

Returns the greatest integer no greater than `this`.

floorToDouble() → double

Returns the greatest integer double value no greater than `this`.

remainder(num other) → double

Returns the remainder of the truncating division of `this` by `other`.

round() → int

Returns the integer closest to `this`.

roundToDouble() → double

Returns the integer double value closest to `this`.

toDouble() → double
inherited

Return this num as a double.

toInt() → int
inherited

Truncates this num to an integer and returns the result as an int.

toString() → String

Provide a representation of this double value.

toStringAsExponential([int fractionDigits]) → String
inherited

Returns an exponential string-representation of `this`.

toStringAsFixed(int fractionDigits) → String
inherited

Returns a decimal-point string-representation of `this`.

toStringAsPrecision(int precision) → String
inherited

Converts `this` to a double and returns a string representation with exactly `precision` significant digits.

truncate() → int

Returns the integer obtained by discarding any fractional digits from `this`.

truncateToDouble() → double

Returns the integer double value obtained by discarding any fractional digits from `this`.