从C中的32位浮点数中提取位

本文介绍了从C中的32位浮点数中提取位的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

32位使用IEEE格式以二进制表示.那么如何提取这些位呢?像&这样的按位运算和|不要对他们工作！我基本上想做的是从opencv中的32位浮点图像中提取LSB提前谢谢！

32 bits are represented in binary using the IEEE format. So how can I extract those bits? Bitwise operations like & and | do not work on them! what i basically want to do is extract the LSB from 32 bit float images in opencv thanx in advance!

推荐答案

#include<stdio.h> union abc { float fo; unsigned int no; }; int main() { union abc test; test.fo=36.5; unsigned int x=test.no; for( int i = 0; i < sizeof(float)*8; i++ ) { printf("%d", x & 0x1); x = x >> 1; } return 0; }

这是一种提取浮点数的方法！

this was a way to extract the bits of the float!