package main

import (
    "fmt"
    "math"
)

func main() {
    // NaN
    {
        var f float = float(math.NaN())
        s := fmt.Sprintf("%f", f)
        fmt.Printf("[%s]\n", s)
        
        var f2 float
        _, err := fmt.Sscanf(s, "%f", &f2)
        
        fmt.Printf("%#v %f\n", err, f2)
    }
    // +Inf
    {
        var f float = float(math.Inf(1))
        s := fmt.Sprintf("%f", f)
        fmt.Printf("[%s]\n", s)
        
        var f2 float
        _, err := fmt.Sscanf(s, "%f", &f2)
        
        fmt.Printf("%#v %f\n", err, f2)
    }
    // -Inf
    {
        var f float = float(math.Inf(-1))
        s := fmt.Sprintf("%f", f)
        fmt.Printf("[%s]\n", s)
        
        var f2 float
        _, err := fmt.Sscanf(s, "%f", &f2)
        
        fmt.Printf("%#v %f\n", err, f2)
    }
}