# math.roundhalfdown

Available inall subroutines.

Rounds to nearest, ties towards negative infinity (also known as *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.

## User contributed notes

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