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why 12.7 - 12.4 <> 0.3

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why the reslut is 0.29999999999  ???

how can i get 0.3 ?

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I don't know why but I have a sollution, round it.

MsgBox(0, '', round(12.7-12.4, 2))

MsgBox(0, '', round(12.7-12.4, 2))


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That's because neither 12.7 nor 12.4 are representable exactly under IEEE754 double format:

ConsoleWrite(Hex(12.7) & @LF)
ConsoleWrite(Hex(12.4) & @LF)


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