A small program to display binary representation of double numbers
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* | |
* File: display-double.cpp | |
* Author: aspyct | |
* | |
* Can be compiled to a binaly that displays the binary value of double numbers. | |
* Usage : ./a.out <number1> ... <number n> | |
* Example: ./a.out 1.0 2.5 | |
* | |
* Created on July 28, 2012, 11:03 PM | |
*/ | |
#include <cstdlib> | |
#include <stdint.h> | |
#include <iostream> | |
using namespace std; | |
union number { | |
double d; | |
uint64_t i; | |
}; | |
void display(double d); | |
void display(union number n); | |
int main(int argc, char** argv) { | |
int i; | |
double d; | |
for (i = 1; i < argc; ++i) { | |
sscanf(argv[i], "%lf", &d); | |
display(d); | |
} | |
return 0; | |
} | |
void display(double d) { | |
union number n; | |
n.d = d; | |
display(n); | |
} | |
void display(union number n) { | |
int i; | |
uint64_t base = 1; | |
cout << (n.i & (base << 63)) << " "; | |
for (i = 62; i > 51; --i) { | |
cout << ((n.i & (base << i)) >> i); | |
} | |
cout << " "; | |
for (; i >= 0; --i) { | |
cout << ((n.i & (base << i)) >> i); | |
} | |
cout << endl; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment