Published Jul 16, 2023
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The Floor() function returns a given decimal number rounded down to the nearest whole number.



The Floor() function accepts a single parameter of type float64 and rounds it down to the nearest whole number.

Note: The returned value may appear to be an int, but it is a float64 value.

Note: Passing any of the following values: ±Inf, ±0, and NaN as an argument to the Floor() function, will result in the returned value being the same as the argument.


The following example demonstrates how to use the Floor() function to round down numbers and print the result:

package main
func main() {
float_number1 := 8.99
float_number2 := -3.11
exp_case := math.NaN()
floored_number1 := math.Floor(float_number1)
floored_number2 := math.Floor(float_number2)
floored_number3 := math.Floor(exp_case)
fmt.Println("The floored value of 8.99 is:", floored_number1)
fmt.Println("The floored value of -3.11 is:", floored_number2)
fmt.Print("The floored value of NaN is:", floored_number3)

The output will be:

The floored value of 8.99 is: 8
The floored value of -3.11 is: -4
The floored value of NaN is: NaN

Codebyte Example

The provided example is executable and demonstrates the usage of the Floor() function.

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