Converting double to void* in C

Question

I\'m writing an interpreter and I\'d like to be able to store whatever value a function returns into a void pointer. I\'ve had no problem storing ints and various pointers a

Answer 1

Here is it

int main ( ) {
    double d = 1.00e+00 ; // 0x3ff0000000000000
    double * pd = & d ;
    void * * p = ( void * * ) pd ;
    void * dp = * p ;
    printf ( "%f %p %p %p \n" , d , pd , p , dp ) ;
    return 0 ;
} ;

output

1.000000 0x7fff89a7de80 0x7fff89a7de80 0x3ff0000000000000

2nd and 3rd addresses could be different. A shortcut

void * dp = * ( void * * ) & d ;

Cheers