fixnum 0.10.11

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A fixed-width 32- and 64- bit integer library for Dart.

Build Status Coverage Status

Documentation #

The fixnum package provides data types for signed 32- and 64-bit integers. The integer implementations in this library are designed to work identically whether executed on the Dart VM or compiled to JavaScript.

For more information, see the fixnum package on

0.10.11 #

  • Update minimum SDK constraint to version 2.1.1.

0.10.10 #

  • Fix Int64 parsing to throw FormatException on an empty string or single minus sign. Previous incorrect behaviour was to throw a RangeError or silently return zero.

0.10.9 #

  • Add Int64.toStringUnsigned() and Int64.toRadixStringUnsigned() functions.

0.10.8 #

  • Set SDK version constraint to >=2.0.0-dev.65 <3.0.0.

0.10.7 #

  • Bug fix: Make bit shifts work at bitwidth boundaries. Previously, new Int64(3) << 64 == Int64(3). This ensures that the result is 0 in such cases.
  • Updated maximum SDK constraint from 2.0.0-dev.infinity to 2.0.0.

0.10.6 #

  • Fix Int64([int value]) constructor to avoid rounding error on intermediate results for large negative inputs when compiled to JavaScript. new Int64(-1000000000000000000) used to produce the same value as Int64.parseInt("-1000000000000000001")

0.10.5 #

  • Fix strong mode warning in overridden compareTo() methods.

No changelog entries for previous versions...

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  fixnum: ^0.10.11

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter pub get

Alternatively, your editor might support pub get or flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:fixnum/fixnum.dart';
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Learn more about scoring.

We analyzed this package on Nov 7, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.6.0
  • pana: 0.12.21


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:fixnum/fixnum.dart.

Maintenance suggestions

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package.

Common filename patterns include main.dart, example.dart, and fixnum.dart. Packages with multiple examples should provide example/

For more information see the pub package layout conventions.

The package description is too short. (-5 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.1 <3.0.0
Dev dependencies
pedantic ^1.8.0
test ^1.2.0