# floor

`inline actual fun floor(x: Double): Double`

(source)**Platform and version requirements:** Kotlin 1.2

Rounds the given value x to an integer towards negative infinity.

**Return**

the largest double value that is smaller than the given value x and is a mathematical integer.

Special cases:

`floor(x)`

is`x`

where`x`

is`NaN`

or`+Inf`

or`-Inf`

or already a mathematical integer.

`inline actual fun floor(x: Float): Float`

(source)**Platform and version requirements:** Kotlin 1.2

Rounds the given value x to an integer towards negative infinity.

**Return**

the largest Float value that is smaller than the given value x and is a mathematical integer.

Special cases:

`floor(x)`

is`x`

where`x`

is`NaN`

or`+Inf`

or`-Inf`

or already a mathematical integer.