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@xtuc/long

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@xtuc/long

A Long class for representing a 64-bit two's-complement integer value.

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What is @xtuc/long?

The @xtuc/long npm package provides functionality for representing 64-bit two's-complement integer values in JavaScript, which are not natively supported by the language. This package allows for the creation, manipulation, and arithmetic of long integers, which is useful in applications that require precise handling of large integer values, such as cryptography, databases, and network protocols.

What are @xtuc/long's main functionalities?

Creating long integers

This code sample demonstrates how to create a new long integer with the most significant 32 bits set to 0x7FFFFFFF and the least significant 32 bits set to 0xFFFFFFFF.

{"Long": require('@xtuc/long'), "longVal": new Long(0xFFFFFFFF, 0x7FFFFFFF)}

Arithmetic operations

This code sample shows how to perform addition of two long integers, resulting in a new long integer.

{"Long": require('@xtuc/long'), "result": new Long(1, 0).add(new Long(1, 0))}

Bitwise operations

This code sample illustrates how to perform a bitwise OR operation between two long integers.

{"Long": require('@xtuc/long'), "result": new Long(1, 0).or(new Long(2, 0))}

Conversion to native types

This code sample demonstrates how to convert a long integer to a native JavaScript number. Note that this can result in precision loss if the long integer's value is outside the safe range for JavaScript numbers.

{"Long": require('@xtuc/long'), "numberVal": new Long(1, 0).toNumber()}

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Package last updated on 18 Feb 2019

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