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I've noticed that import changes numbers slightly. For example, 0.417 becomes 0.416999999999. What is causing this to happen?

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Eric S
Eric S el 14 de En. de 2016
Cerrada: MATLAB Answer Bot el 20 de Ag. de 2021
I've noticed that import changes numbers slightly. For example, 0.417 becomes 0.416999999999. What is causing this to happen?
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John D'Errico
John D'Errico el 14 de En. de 2016
Editada: John D'Errico el 14 de En. de 2016
0.417 is a number that does not exist in a BINARY floating point form, so it is stored as
0.4169999999999999817923423961474327370524406433105468750

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Star Strider
Star Strider el 14 de En. de 2016
You’re seeing floating-point approximation error.
A recent discussion: Why do inconsistencies exist with floating-point numbers rounding in sprintf, fprintf, sin etc?

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