Converting from an integer to its binary representation

Question

Has anyone got an idea if there is any inbuilt functionality in Go for converting from any one of the numeric types to its binary number form.

For example, if

Answer 1

Unsafe pointers must be used to correctly represent negative numbers in binary format.

package main

import (
    "fmt"
    "strconv"
    "unsafe"
)

func bInt(n int64) string {
    return strconv.FormatUint(*(*uint64)(unsafe.Pointer(&n)), 2)
}

func main() {
    fmt.Println(bInt(-1))
}

https://play.golang.org/p/GxXjjWMyC4x