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

INFINITY → double

1.0 / 0.0
MAX_FINITE → double

1.7976931348623157e+308
MIN_POSITIVE → double

5e-324
NAN → double

0.0 / 0.0
NEGATIVE_INFINITY → double

-INFINITY

Static Methods

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

Parse source as an double literal and return its value.

Constructors

double()

Properties

hashCode → int

Get a hash code for this object.

read-only, inherited
isFinite → bool

True if the number is finite; otherwise, false.

read-only, inherited
isInfinite → bool

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

read-only, inherited
isNaN → bool

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

read-only, inherited
isNegative → bool

True if the number is negative; otherwise, false.

read-only, inherited
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited
sign → double

Returns the sign of the double's numerical value.

read-only

Operators

operator %(num other) → double

Euclidean modulo operator.

operator *(num other) → double

Multiplication operator.

operator +(num other) → double

Addition operator.

operator -(num other) → double

Subtraction operator.

operator /(num other) → double

Division operator.

operator <(num other) → bool

Relational less than operator.

inherited
operator <=(num other) → bool

Relational less than or equal operator.

inherited
operator ==(Object other) → bool

Test whether this value is numerically equal to other.

inherited
operator >(num other) → bool

Relational greater than operator.

inherited
operator >=(num other) → bool

Relational greater than or equal operator.

inherited
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

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.

floorToDouble() → double

Returns the greatest integer double value no greater than this.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited
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

Return this num 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.

toStringAsExponential([int fractionDigits ]) → String

Returns an exponential string-representation of this.

inherited
toStringAsFixed(int fractionDigits) → String

Returns a decimal-point string-representation of this.

inherited
toStringAsPrecision(int precision) → String

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

inherited
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.