double class abstract final

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.

See also:

num the super class for double.
Numbers in A tour of the Dart language.

Inheritance

Object
num
double

Available extensions

Properties

address ↔ Pointer <Never>: Available on double, provided by the DoubleAddress extension
The memory address of the underlying data.
getter/setter pair
hashCode → int: Returns a hash code for a numerical value.
no setterinherited
isFinite → bool: Whether this number is finite.
no setterinherited
isInfinite → bool: Whether this number is positive infinity or negative infinity.
no setterinherited
isNaN → bool: Whether this number is a Not-a-Number value.
no setterinherited
isNegative → bool: Whether this number is negative.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
sign → double: The sign of the double's numerical value.
no setteroverride
toJS → JSNumber: Available on double, provided by the DoubleToJSNumber extension
Converts this double to a JSNumber.
no setter
toJS → JSNumber: Available on num, provided by the NumToJSExtension extension
Converts this num to a JSNumber.
no setter

Methods

abs () → double: The absolute value of this number.
override
ceil () → int: Returns the least integer that is not smaller than this number.
override
ceilToDouble () → double: Returns the least integer double value no smaller than this.
override
clamp (num lowerLimit, num upperLimit) → num: Returns this num clamped to be in the range lowerLimit-upperLimit.
inherited
compareTo (num other) → int: Compares this to other.
inherited
floor () → int: Returns the greatest integer no greater than this number.
override
floorToDouble () → double: Returns the greatest integer double value no greater than this.
override
noSuchMethod (Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
remainder (num other) → double: The remainder of the truncating division of this by other.
override
round () → int: Returns the integer closest to this number.
override
roundToDouble () → double: Returns the integer double value closest to this.
override
toDouble () → double: This number as a double.
inherited
toInt () → int: Truncates this num to an integer and returns the result as an int.
inherited
toString () → String: Provide a representation of this double value.
override
toStringAsExponential ([int? fractionDigits]) → String: An exponential string-representation of this number.
inherited
toStringAsFixed (int fractionDigits) → String: A decimal-point string-representation of this number.
inherited
toStringAsPrecision (int precision) → String: A string representation with precision significant digits.
inherited
truncate () → int: Returns the integer obtained by discarding any fractional part of this number.
override
truncateToDouble () → double: Returns the integer double value obtained by discarding any fractional digits from this.
override

Operators

operator % (num other) → double: Euclidean modulo of this number by other.
override
operator * (num other) → double: Multiplies this number by other.
override
operator + (num other) → double: Adds other to this number.
override
operator - (num other) → double: Subtracts other from this number.
override
operator / (num other) → double: Divides this number by other.
override
operator < (num other) → bool: Whether this number is numerically smaller than other.
inherited
operator <= (num other) → bool: Whether this number is numerically smaller than or equal to other.
inherited
operator == (Object other) → bool: Test whether this value is numerically equal to other.
inherited
operator> (num other) → bool: Whether this number is numerically greater than other.
inherited
operator>= (num other) → bool: Whether this number is numerically greater than or equal to other.
inherited
operator unary- () → double: Subtracts other from this number.
override
operator ~/ (num other) → int: Truncating division operator.
override

Static Methods

parse (String source) → double: Parse source as a double literal and return its value.
override
tryParse (String source) → double?: Parse source as a double literal and return its value.
override

Constants

infinity → const double
maxFinite → const double
minPositive → const double
nan → const double
negativeInfinity → const double