I'm trying to display double precision numbers in binary form so that I can manipulate them on the bit level. I'm pretty sure I've figured out how to display them in binary form, only I'm getting weird results that I can't make sense of.

I have the following code:

which results in:Code:#include <bitset> #include <iostream> #include <string> #include <limits> using namespace std; int main(){ cout << "1: \n" << bitset<numeric_limits<unsigned long>::digits>(1) << endl; cout << "-1: \n" << bitset<numeric_limits<unsigned long>::digits>((-1)) << endl; cout << "5: \n" << bitset<numeric_limits<unsigned long>::digits>(5) << endl; cout << "-5: \n" << bitset<numeric_limits<unsigned long>::digits>(-5) << endl; cout << "4503599627370496: \n" << bitset<numeric_limits<unsigned long>::digits>(4503599627370496) << endl; cout << "-4503599627370496: \n" << bitset<numeric_limits<unsigned long>::digits>(-4503599627370496) << endl; cout << "4503599627370496e1: \n" << bitset<numeric_limits<unsigned long>::digits>(4503599627370496e1) << endl; cout << "4503599627370496e-1: \n" << bitset<numeric_limits<unsigned long>::digits>(4503599627370496e-1) << endl; return 0; }

My understanding is that a double precision number is suppose to have the following layout:Code:1: 0000000000000000000000000000000000000000000000000000000000000001 -1: 1111111111111111111111111111111111111111111111111111111111111111 5: 0000000000000000000000000000000000000000000000000000000000000101 -5: 1111111111111111111111111111111111111111111111111111111111111011 4503599627370496: 0000000000010000000000000000000000000000000000000000000000000000 -4503599627370496: 1111111111110000000000000000000000000000000000000000000000000000 4503599627370496e1: 0000000010100000000000000000000000000000000000000000000000000000 4503599627370496e-1: 0000000000000001100110011001100110011001100110011001100110011001

1 sign bit, 11 exponent bits, 52 fraction bits

If this is true, then there must be something wrong with my code because "1" and "-1" should only have one bit that is different. What is wrong with my code?