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75 lines
1.4 KiB
75 lines
1.4 KiB
var assert = require('assert') |
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var UINT32 = require('..').UINT32 |
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describe('multiply method', function () { |
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describe('0*0', function () { |
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it('should return 0', function (done) { |
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var u = UINT32(0).multiply( UINT32(0) ) |
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assert.equal( u.toNumber(), 0 ) |
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done() |
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}) |
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}) |
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describe('1*0', function () { |
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it('should return 0', function (done) { |
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var u = UINT32(1).multiply( UINT32(0) ) |
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assert.equal( u.toNumber(), 0 ) |
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done() |
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}) |
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}) |
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describe('0*1', function () { |
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it('should return 0', function (done) { |
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var u = UINT32(0).multiply( UINT32(1) ) |
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assert.equal( u.toNumber(), 0 ) |
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done() |
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}) |
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}) |
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describe('low bit*high bit', function () { |
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it('should return n', function (done) { |
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var n = Math.pow(2, 17) |
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var u = UINT32(3).multiply( UINT32(n) ) |
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assert.equal( u.toNumber(), 3*n ) |
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done() |
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}) |
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}) |
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describe('high bit*low bit', function () { |
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it('should return n', function (done) { |
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var n = Math.pow(2, 17) |
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var u = UINT32(n).multiply( UINT32(3) ) |
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assert.equal( u.toNumber(), 3*n ) |
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done() |
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}) |
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}) |
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describe('high bit*high bit', function () { |
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it('should return n', function (done) { |
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var n = 'FFFFFFFF' |
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var u = UINT32(n, 16).multiply( UINT32(n, 16) ) |
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assert.equal( u.toNumber(), 1 ) |
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done() |
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}) |
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}) |
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})
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