Lottery Generator

[altenbach]

I meant using the rifle VI from the palette. 😉

[StevenD]

Wow. Some amazing insights in here. 

Can I ask why the scale by power of two is used rather than multiply?

[Ben]

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@StevenD wrote:

Wow. Some amazing insights in here. 

Can I ask why the scale by power of two is used rather than multiply?

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I will wait to hear from Christian and learn as well but I can observe that a scale by a power of two in binary is simply an arithmetic shift left.

Ben

[altenbach]

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StevenD wrote:

Can I ask why the scale by power of two is used rather than multiply?

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Multiply is probably a better choice here, because the price can change by a random amount. A multiplication/division by integer powers of two corresponds to an arithmetic shift (not logical shift, important difference when the input is negative) for integers. Even for floating point numbers, only a subset of bits need to be touched, but I doubt it would make a difference on a modern processor (but would be of great help when using paper& pencil :)).

So, yes we should use multiplication here. Shifts/powers of two should be used where it is more natural, e.g. if you would implement the cooley-tuckey fft or a binary search. Sorry about that.