Absolute difference between time.Duration

Question

I have 2 variables with time.Duration type. I need to find the difference in duration between them.
For example v1 = 1sec and v2 = 10sec. The difference will be 9 sec. The same difference will be if v1 = 10sec and v2 = 1sec.
Both variables can have different values for hours, minutes etc.

How can I do this in Go?

This is a trivial question but I'm new to Go.

Solution: I used a modified version of provided answer:

func abs(value time.Duration) time.Duration {
    if value < 0 {
        return -value
    }
    return value
}

Answer 1

An elegant solution is to use bitshift >>

func absDuration(d time.Duration) time.Duration {
   s := d >> 63 
   return (d ^ s) - s
}

bitshift in Golang is logic if the left operand is negative