Does anyone know an easy way to access individual the bits of, say, an unsigned int. I know there are methods that involve shifting the number and using bit-wise operators to determine the bit value. I would like to perform quick and repeatable access to the bits and don't want to destroy the data in the process of reading it. I assume there is some easy command using pointers.
I prefer a bit more of an elegant solution
Now you can access the bits and the value quickly and easily without the nasty shifting anding and oring that's in Salem's example!Code:union ByteBitfield { unsigned char Value; struct { bool Zero : 1, One : 1, Two : 1, Three : 1, Four : 1, Five : 1, Six : 1, Seven : 1; } Bits; };
See! No nasty shifting, compilments, anding oring, or even comparisons!Code:ByteBitfield MyData; MyData.Value; // Gets you the value of the number MyData.Bits.Zero; // Gives you "true" if the Zero bit is set to 1 MyData.Bits.One; // Gives you "true" if the One bit is set to 1 if( MyData.Bits.Three ) { /* Do Something */ } // You can also change the bit extremely easily MyData.Bits.Three = true; // Set's bit Three to 1 MyData.Bits.Four = !MyData.Bits.Four; // Toggles bit Four
Sorry to disagree with you Salem!
I prefer an even more elegant solutionOriginally posted by Polymorphic OOP
I prefer a bit more of an elegant solution
Use the standare headers as much as possible.Code:#include <bitset> #inlude <iostream> int main() { std::bitset<32> b = 0; b[2] = 1; b[5] = 1; std::cout << b.to_ulong(); }
Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling
The standard libraries take all the fun out of coding. They should die of gohnnoreah and rot in hell.Originally posted by Sang-drax
Use the standare headers as much as possible.
...yes, i know i spelled that horribly, horribly wrong
Using the bitset class would work, though.
Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling
