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math.floor()

Computes the largest integer value less than or equal to the given value. In other words, round x towards negative infinity.

For example, 2.2, 2.5, and 2.7 all floor to 2.0.

Return Value

If x is math.NAN, a NaN will be returned.
If x is integral, ±0, x itself is returned.
If x is math.POS_INFINITY or math.NEG_INFINITY, an infinity of the same sign is returned.
Otherwise, the rounded value of x is returned.

Format

FLOAT
math.floor(FLOAT x)