What is fastest way to convert bool to byte?

Question

What is fastest way to convert bool to byte?

I want this mapping: False=0, True=1

Note: I don\'t want to use any if statements or other conditio

Answer 1

You can use this struct to do similar to ChaosPandion's solution, but with safe code.

[StructLayout(LayoutKind.Explicit)]
struct BoolByte
{
    [FieldOffset(0)]
    public bool flag;
    [FieldOffset(0)]
    public byte num;
}

...

bool someBool = true;
byte num = new BoolByte() { flag = someBool }.num;

I haven't benchmarked it, so I'm not sure how the speed compares.

[EDIT] Well I ran the benchmark with .NET 3.5 equivalent mono and it looks like this is ~10% slower than a plain if check (on my macbook pro). So forget about this one. I doubt .NET 4+ would make a difference there.