如何获得最小的非零float64？

The math library doesn't seem to have a Min function for float64. How would I get the smallest non-zero float64?

as @oliver-charlesworth says:

package main

import (
    "fmt"
    "math"
)

func main() {
    fmt.Printf("%.12G", math.SmallestNonzeroFloat64)
}

https://play.golang.org/p/kRuIhalODGa

Output:

4.94065645841E-324