primary school question!

well, a silly question
why 0.07*400 is not equal to 28?
see screenshot;

回答(1 个)

Image Analyst
Image Analyst 2020-11-28

0 个投票

Truncation error due to double's only using 64 bits instead of an infinite number of bits. It will be off a very small amount, eps(28). See the FAQ for a thorough discussion:

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2020-11-28

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