float64 not supported when marshalling to YAML

[ghodss]

Example code:

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

Seems to be related to this line of code: https://github.com/go-yaml/yaml/blob/v2/encode.go#L285

[udhos]

I have just tested this code and it seems to work correctly.

lab@ubu1:~$ more f.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))
}
lab@ubu1:~$ go run f.go
Should contain 3.4028234663852886e+38: f: 3.4028234663852886e+38
Should contain 1.7976931348623157e+308: f: 1.7976931348623157e+308
lab@ubu1:~$