[computer-go] C++ random numbers

[Peter Drake]

How about this:

(uint64_t(rand()) << 32) | rand()

Is the casting necessary?

Peter Drake
Assistant Professor of Computer Science
Lewis & Clark College
http://www.lclark.edu/~drake/




On Aug 8, 2006, at 3:23 PM, Chris Fant wrote:

> Assuming you have a quality 32-bit generator, you can do something  
> like:
>
> uint64 r = (r32( )<<32) | r32( );
>
>
>
> On 8/8/06, Peter Drake <drake at lclark.edu> wrote:
>>
>> Okay, next question: how do I generate a random 64-bit unsigned  
>> integer?
>>
>> Thanks in advance for any help,
>>
>>
>> Peter Drake
>> Assistant Professor of Computer Science
>> Lewis & Clark College
>> http://www.lclark.edu/~drake/
>>
>>
>>
>>
>>
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