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integer

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Native 64-bit integers with overflow protection.

github.com/JoshuaWise/integer

JoshuaWise/integer

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'use strict'; const expect = require('chai').expect; const Integer = require('../.'); describe('Integer#low and Integer#high', function () { it('should return the lower 32 bits', function () { expect(Integer.fromBits(0).low).equal(0); expect(Integer.fromBits(1).low).equal(1); expect(Integer.fromBits(123).low).equal(123); expect(Integer.fromBits(-1).low).equal(-1); expect(Integer.fromBits(0x7fffffff).low).equal(0x7fffffff); expect(Integer.fromBits(-0x80000000).low).equal(-0x80000000); expect(Integer.fromBits(0, 555).low).equal(0); expect(Integer.fromBits(1, 555).low).equal(1); expect(Integer.fromBits(123, 555).low).equal(123); expect(Integer.fromBits(-1, 555).low).equal(-1); expect(Integer.fromBits(0x7fffffff, 555).low).equal(0x7fffffff); expect(Integer.fromBits(-0x80000000, 555).low).equal(-0x80000000); }); it('should return the higher 32 bits', function () { expect(Integer.fromBits(0, 0).high).equal(0); expect(Integer.fromBits(0, 1).high).equal(1); expect(Integer.fromBits(0, 123).high).equal(123); expect(Integer.fromBits(0, -1).high).equal(-1); expect(Integer.fromBits(0, 0x7fffffff).high).equal(0x7fffffff); expect(Integer.fromBits(0, -0x80000000).high).equal(-0x80000000); expect(Integer.fromBits(555, 0).high).equal(0); expect(Integer.fromBits(555, 1).high).equal(1); expect(Integer.fromBits(555, 123).high).equal(123); expect(Integer.fromBits(555, -1).high).equal(-1); expect(Integer.fromBits(555, 0x7fffffff).high).equal(0x7fffffff); expect(Integer.fromBits(555, -0x80000000).high).equal(-0x80000000); }); });