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

回答(1 个)
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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