怎么显示浮点数在内存中的表示啊

[linux123456linux]

RT
例如根据IEEE754,double的0.5在内存表示是3fe0000000000000
怎么编程批量显示浮点数在内存中的表示？

[zhangsongcui]

union DOUBLE
{
	double d;
	int a[2];
};

[KingWolfOfSky]

#include <stdio.h>

int main(int argc,char *argv[])
{
	double d=0.5;
	_int64 *p=(_int64*)&d;
	printf("%016I64x",*p);
}

[yiruirui0507]

#include <stdio.h>

int main(int argc,char *argv[])
{
double d=0.5;
_int64 *p=(_int64*)&d;
printf("%016I64x",*p);
}
正解

[飞天御剑流]

对于小端系统:

#include< stdef.h >

........
    double Example = 0.5;
    unsigned char *Ptr = ( unsigned char* )&Example;
    int i = sizeof( double ) - 1;
    for( ; i >= 0; --i )
        printf( "%02X ", Ptr[i] );
.........

大端的话把i倒过来就行了。

[pengzhixi]

[Quote=引用 4 楼 supermegaboy 的回复:]
对于小端系统:


C/C++ code

#include< stdef.h >

........
double Example = 0.5;
unsigned char *Ptr = ( unsigned char* )&Example;
int i = sizeof( double ) - 1;
for( ; i >= 0; -……
[/Quote]

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