extra-integer

A 32-bit integer can store values from -2^31 to 2^31 - 1.
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This package deals with the manipulation of 32-bit integers in JavaScript, which can store values ranging from -2^31 (MIN_VALUE) to 2^31 - 1 (MAX_VALUE). JavaScript converts a Number (a 64-bit floating point number) to a 32-bit integer (int32) when bitwise operators (such as |) are applied.

Use is to check is a number can be represented as a 32-bit integer. Sign-based operations include abs and signEqual. Power/logarithm related operations include isPow2, prevPow2, nextPow2, pow2, pow10, log2, and log10.

This package is available in Node.js and Web formats. To use it on the web, simply use the extra_integer global variable after loading with a <script> tag from the jsDelivr CDN.

Stability: Experimental.

const xinteger = require('extra-integer');
// import * as xinteger from "extra-integer";
// import * as xinteger from "https://unpkg.com/extra-integer/index.mjs"; (deno)

xinteger.is(9.11e-31);
// → false

xinteger.log10(10000);
// → 4

xinteger.nextPow2(63);
// → 64

Index

Property	Description
MIN_VALUE	Minimum int32 value.
MAX_VALUE	Maximum int32 value.
is	Check if value is int32.
abs	Get the absolute of an int32.
signEqual	Check if two int32s have equal sign.
isPow2	Check if int32 is a power-of-2.
prevPow2	Find previous power-of-2 of an int32.
nextPow2	Find next power-of-2 of an int32.
pow2	Find the power-of-2 of an int32.
pow10	Find the power-of-10 of an int32.
log2	Find the base-2 logarithm of an int32.
log10	Find the base-10 logarithm of an int32.

References

• Bit Twiddling Hacks by Sean Eron Anderson
• bit-twiddle package by @mikolalysenko