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math.roundhalfdown()

Rounds to nearest, ties towards negative infinity (half down).

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.roundhalfdown(FLOAT x)