convert big.Float to big.Int

[maiiz]

how can i convert big.Float to big.Int

package main

import "fmt"
import "math/big"

func FloatToC(val float64) *big.Int {
        bigval := new(big.Float)
        bigval.SetFloat64(val)

        coin := new(big.Float)
        coin.SetInt(big.NewInt(1000000000000000000))
        bigval.Mul(bigval, coin)

        result := new(big.Int)
        f, _ := bigval.Uint64()
        result.SetUint64(f)

        return result
}

func main() {
        fmt.Println("vim-go")
        fmt.Println(FloatToC(float64(10)))
        fmt.Println(FloatToC(float64(20)))
        fmt.Println(FloatToC(float64(30)))
        fmt.Println(FloatToC(float64(40)))
        fmt.Println(FloatToC(float64(50)))
        fmt.Println(FloatToC(float64(100)))
        fmt.Println(FloatToC(float64(1000)))
        fmt.Println(FloatToC(float64(10000)))
}

this snippet code will be overflow.

[bradfitz]

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