float64 not supported when marshalling to YAML in go-yaml

gistfile1.go

package main

import (
	"fmt"
	"math"

	"gopkg.in/v2/yaml"
)

type A struct {
	F float64
}

func main() {
	f32 := A{math.MaxFloat32}
	f64 := A{math.MaxFloat64}

	y32, err := yaml.Marshal(f32)
	if err != nil {
		fmt.Printf("%v\n", err)
	}

	y64, err := yaml.Marshal(f64)
	if err != nil {
		fmt.Printf("%v\n", err)
	}

	fmt.Printf("Should contain %v: %v", math.MaxFloat32, string(y32))
	fmt.Printf("Should contain %v: %v", math.MaxFloat64, string(y64))
}

// output:
Should contain 3.4028234663852886e+38: f: 3.4028235e+38
Should contain 1.7976931348623157e+308: f: .inf

go-yaml/yaml#83