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Re: random integers between 0 and 1,000,000 [message #45966 is a reply to message #45961]

Mon, 24 October 2005 01:59

Norbert Hahn
Messages: 46
Registered: May 2003

Member

"Peter Albert" <peter.albert@gmx.de> wrote:

> Hi Mike,
>
> I'd guess you got the negative numbers because you defined the array

Unfortunately your guess does not correspond to the docu:

> weights beforehand to be of integer type. Assigning it with values of
> type long will lead to negative numbers if the values are larger than
> 2^15-1.

fix uses 15+1 bits for integer numbers (one bit is used for sign)
long uses 31+1 bits for integer numbers ...
ulong uses 32 bits for unsigned numbers. There is no sign.
long64...

So the original problem comes from interpreting the internal bits of
unsigned numbers. The preferable function for transforming 0...1 float
to integer without sign would be long.

Norbert

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[Message index]

		Re: random integers between 0 and 1,000,000 By: Norbert Hahn on Mon, 24 October 2005 09:38
		Re: random integers between 0 and 1,000,000 By: Norbert Hahn on Mon, 24 October 2005 09:36
		Re: random integers between 0 and 1,000,000 By: James Kuyper on Mon, 24 October 2005 07:04
		Re: random integers between 0 and 1,000,000 By: peter.albert@gmx.de on Mon, 24 October 2005 06:23
		Re: random integers between 0 and 1,000,000 By: Norbert Hahn on Mon, 24 October 2005 01:59
		Re: random integers between 0 and 1,000,000 By: peter.albert@gmx.de on Sun, 23 October 2005 23:12
		Re: random integers between 0 and 1,000,000 By: steven.leopardi on Sat, 22 October 2005 19:44
		Re: random integers between 0 and 1,000,000 By: James Kuyper on Mon, 24 October 2005 12:06

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