BitVector32 structure and BitVector32.Section structure
Part of my 2008 study notes for exam 70-536 (.NET Framework 2.0).
Overview
- Used to manipulate the bits of a 32 integer.
- Used to pack multiple small numbers into one when storage is an issue.
Examples
Bitwise Manipulation
BitVector32 c = new BitVector32(0);
int firstBit = BitVector32.CreateMask();
int secondBit = BitVector32.CreateMask(firstBit);
int thirdBit = BitVector32.CreateMask(secondBit);
c[firstBit] = true;
c[thirdBit] = true;
Console.WriteLine(c.Data); // 5
Console.WriteLine(c); // BitVector32{00000000000000000000000000000101}
Bit Packing
BitVector32.Section a = BitVector32.CreateSection(10); // Max number to store is 10
BitVector32.Section b = BitVector32.CreateSection(80, a); // Max number to store is 80
BitVector32.Section c = BitVector32.CreateSection(5, b); // Max number to store is 5
BitVector32 x = new BitVector32(0);
x[a] = 5;
x[b] = 79;
x[c] = 3;
Console.WriteLine(x[a]); // 5
Console.WriteLine(x[b]); // 79
Console.WriteLine(x[c]); // 3
Console.WriteLine(x.Data); // 7413
Console.WriteLine(x); // BitVector32{00000000000000000001110011110101}
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