dtr87341
2016-06-08 06:39
浏览 434
已采纳

在Golang中将一个指针转换为另一种类型

I want to convert a float64 number into int64 number. That is, I want to read the binary contents of the float64 register as if it is a int64 value. I mean, I want the go equivalent of the following C code

long y;
float x = 1.2;
y  = * ( long * ) &x;

How do I do that?

Here is my try which is not working.

package main

import (
    "fmt"
)

func main() {

    x := float64(1.2)
    y := *((*int64)(&x))

    fmt.Println("Ans:  ", y)

}
  • 写回答
  • 好问题 提建议
  • 追加酬金
  • 关注问题
  • 收藏
  • 邀请回答

2条回答 默认 最新

  • douxiajia6104 2016-06-08 06:51
    已采纳

    That is, I want to read the binary contents of the float64 register as if it is a int64 value.

    Try math.Float64bits:

    x := float64(1.2)
    fmt.Printf("Ans:  %x", math.Float64bits(x))
    

    https://play.golang.org/p/QB4jqwJD0f

    Prints Ans: 3ff3333333333333.

    评论
    解决 无用
    打赏 举报
查看更多回答(1条)

相关推荐 更多相似问题