Published Oct 3, 2023
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The Dim() function takes two floating-point numbers (x and y), calculates the difference (x - y), and then returns either this value, or 0 (if the difference is negative). The result is a single floating-point number that represents the maximum difference between x and y.


difference := math.Dim(x, y)

The Dim() function returns a single value of type float64. If the difference (x-y) is greater than 0, it is returned; else, 0 is returned.

Note these special cases:

  • Passing NaN in this function will return NaN.
  • Passing positive or negative Inf in this function will return NaN.


In this Go code example, we have a simple program that calculates and prints the positive difference between two numbers, 7.0 and 4.0, using the Dim() function from the math package.

package main
import (
func main() {
// Define two numbers
a := 7.0
b := 4.0
// Calculate the positive difference between a and b using math.Dim()
difference := math.Dim(a, b)
fmt.Printf("The positive difference between %.1f and %.1f is %.1f\n", a, b, difference)

The above code results in the following output:

The positive difference between 7 and 4 = 3

Codebyte Example

The example below is runnable and demonstrates the Dim() function.

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