number library

The quantity package accepts both Dart's num types and the Numbers defined by this number library as quantity values and for quantity operations.

The classes in this library can be used to model quantities having values with arbitrary precision as well as imaginary or complex numbers. It is independent of the quantity classes and can be used in a purely mathematical context.

Classes

Binary: Represents an integer as a binary number.
Complex: Complex numbers have both a real and an imaginary part.
Digit: Represents a digit in four bits of a single byte. This wastes four bits but that's a decent trade-off for simplicity and better anyway than the 4+ bytes allocated for a regular int.
Double: Wraps Dart's core double type, so that it can share a common base type with other Numbers.
Fraction: A convenient way to represent fractional numbers.
Hexadecimal: Represents an integer as a hexadecimal number.
Imaginary: Represents an imaginary number, defined as a number whose square is negative one.
Integer: Wraps Dart's core int type, so that it can share a common base type with other Numbers.
Number: The abstract base class for all Number types.
Octal: Represents an integer as an octal number.
Precise: Precise represents an arbitrary precision number.
Real: Provides a common handle for all Real Numbers.

Functions

erf(double x) → double: Approximate solution for the error function of x.
hashObjects(Iterable<Object> objects) → int: Generates a unique hash for a set of objects.
numberToNum(Number number) → num: Converts a Number to the equivalent num.
numToNumber(num value) → Number: Converts a num value to associated Number object (Integer for ints and doubles that have an integer value, Double for other doubles).
objToNumber(Object object) → Number: Converts an object to a Number. The object must be either a num or Number, otherwise an Exception is thrown.

Exceptions / Errors

NumberException: The base class for all exceptions thrown in relation to numbers.