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Microsoft redesigned the calculator software included with Windows 10. The reason: for some calculations, the program made a curious error.
This update was apparently not only important for users: soon you can use the calculator under Windows 10 to correctly calculate the square roots of perfect squares. The developers have managed to correct a miscalculation known for years.
The following simple calculation brought a lot of ridicule to Microsoft:
What is the root of 4 minus 2? This is easy to calculate in the head: The correct result is 0. The Windows calculator, however, has claimed for years that it was -1.068281969439142e-19
The problem comes down to a mistake. rounding that occurs in the square root calculations of perfect squares. Raymond Chen in a blog post.
iPhone users have discovered a miscalculation that was at least as curious last fall: they noticed that the Apple calculator can not follow you if you type the numbers quickly. The result of the calculation was then incorrect.
Calculator error in the Windows calculator: The root of 4 minus two is equal to …? (Source: Screenshot / t-online.de)
The bug in the Microsoft computation program is known for two years, but the solution seems to have been quite complicated, and the Windows computation program now takes a few milliseconds longer to extract the square roots, Chen writes but users rely on the result
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Microsoft employees made the mistake Even with humor: They printed the number -1.068281969439142e-19 on T-shirts to celebrate the successful patch of the software.
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