douken7402 2014-03-18 21:57
浏览 1376
已采纳

在GoLang中将字节数组“ [] uint8”转换为float64

I'm trying to convert a []uint8 byte array into a float64 in GoLang. I can't find a solution for this issue online. I've seen suggestions of converting to a string first and then to a float64 but this doesn't seem to work, it loses it's value and I end up with zeroes.

Example:

metric.Value, _ = strconv.ParseFloat(string(column.Value), 64)

And it doesn't work...

  • 写回答

4条回答 默认 最新

  • dongzheng7165 2014-03-18 22:37
    关注

    For example,

    package main
    
    import (
        "encoding/binary"
        "fmt"
        "math"
    )
    
    func Float64frombytes(bytes []byte) float64 {
        bits := binary.LittleEndian.Uint64(bytes)
        float := math.Float64frombits(bits)
        return float
    }
    
    func Float64bytes(float float64) []byte {
        bits := math.Float64bits(float)
        bytes := make([]byte, 8)
        binary.LittleEndian.PutUint64(bytes, bits)
        return bytes
    }
    
    func main() {
        bytes := Float64bytes(math.Pi)
        fmt.Println(bytes)
        float := Float64frombytes(bytes)
        fmt.Println(float)
    }
    

    Output:

    [24 45 68 84 251 33 9 64]
    3.141592653589793
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(3条)

报告相同问题?

悬赏问题

  • ¥65 LineageOs-21.0系统编译问题
  • ¥30 关于#c++#的问题,请各位专家解答!
  • ¥15 App的会员连续扣费
  • ¥15 不同数据类型的特征融合应该怎么做
  • ¥15 用proteus软件设计一个基于8086微处理器的简易温度计
  • ¥15 用联想小新14Pro
  • ¥15 multisim中关于74ls192n和DSWPK开关仿真图分析(减法计数器)
  • ¥15 w3wp,exe 中发生未处理的 Microsoft ,NETFramework 异常。
  • ¥20 C51单片机程序及仿真(加减器)
  • ¥15 AQWA | 水动力分析 二阶波浪力