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What are the symbols of integer and decimal parts in mathematics?
In mathematics, there is a function that takes the integer part of the decimal.

]

in other words

[3.4]=3

[8.9]=8

[-8.7]=-8

That is, the number after the decimal point is discarded without rounding!

The decimal part is X-[X], and the decimal part is a number directly removed from the integer part.

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