Definition:Floor Function/Also known as

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Floor Function: Also known as

The floor function of a real number $x$ is usually just referred to as the floor of $x$.

The floor function is sometimes called the entier function, from the French for integer.

The floor of $x$ is also often referred to as the integer part or integral part of $x$, particularly in older treatments of number theory.

Some sources give it as the greatest integer function.