jslong

The jslong - is a pure JavaScript implementation of Long class for representing a 64-bit two's-complement integer value.

$ npm install -save @modern-dev/jslong

📋 Usage

import { Long } from '@modern-dev/jslong';

const val = Long.getMinValue().subtract(Long.fromInt(1024)).toString(16);
console.log(val); // '7ffffffffffffc00'

🎓 API Reference

Constructor

/**
 * @param {number} low  The low (signed) 32 bits of the long.
 * @param {number} high  The high (signed) 32 bits of the long.
 */
constructor(low: number, high: number)

Methods

Method signature	Description
toInt(): number	The value, assuming it is a 32-bit integer.
toNumber(): number	The closest floating-point representation to this value.
isSafeInteger(): boolean	if can be exactly represented using number (i.e. abs(value) < 2^53).
toString(radix?: number): string	The textual representation of this value.
getHighBits(): number	The high 32-bits as a signed value.
getLowBits(): number	The low 32-bits as a signed value.
getLowBitsUnsigned(): number	The low 32-bits as an unsigned value.
getNumBitsAbs(): number	Returns the number of bits needed to represent the absolute value of this Long.
isZero(): boolean	Whether this value is zero.
isNegative(): boolean	Whether this value is negative.
isOdd(): boolean	Whether this value is odd.
equals(other: Long): boolean	Whether this Long equals the other.
notEquals(other: Long): boolean	Whether this Long does not equal the other.
lessThan(other: Long): boolean	Whether this Long is less than the other.
lessThanOrEqual(other: Long): boolean	Whether this Long is less than or equal to the other.
greaterThan(other: Long): boolean	Whether this Long is greater than the other.
greaterThanOrEqual(other: Long): boolean	Whether this Long is greater than or equal to the other.
compare(other: Long): number	0 if they are the same, 1 if the this is greater, and -1 if the given one is greater.
negate(): Long	The negation of this value.
add(other: Long): Long	The sum of this and the given Long.
subtract(other: Long): Long	The difference of this and the given Long.
multiply(other: Long): Long	The product of this and the other.
div(other: Long): Long	This Long divided by the given one.
modulo(other: Long): Long	This Long modulo the given one.
not(): Long	The bitwise-NOT of this value.
and(other: Long): Long	The bitwise-AND of this and the other.
or(other: Long): Long	The bitwise-OR of this and the other.
xor(other: Long): Long	The bitwise-XOR of this and the other.
shiftLeft(numBits: number): Long	This shifted to the left by the given amount.
shiftRight(numBits: number): Long	This shifted to the right by the given amount.
shiftRightUnsigned(numBits: number): Long	This shifted to the right by the given amount, with zeros placed into the new leading bits.
static fromInt(value: number): Long	The corresponding Long value.
static fromNumber(value: number): Long	The corresponding Long value.
static fromBits(lowBits: number, highBits: number): Long	The corresponding Long value.
static fromString(str: string, opt_radix?: number): Long	The corresponding Long value.
static isStringInRange(str: string, opt_radix: number): boolean	Whether the string is within the range of a Long.

📗 License

Licensed under the Apache License 2.0.

Based on the Long implementation for Google's Closure Library.

Copyright 2009 The Closure Library Authors. All Rights Reserved.

Copyright (c) 2020 Bohdan Shtepan

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