Re: Sv: Sv: A83: Random values
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Re: Sv: Sv: A83: Random values
Yupp. So you can do a writeback to the program, saving the last random number
and reading it back as the first random number when the program is run again.
Another widely used method is to check how long time the user waits before
pressing a key. This would involve using your own key loop, instead of
_getkey:ing.
Linus
On 11-Sep-98, Thomas Turn Jensen wrote:
>But if I start with a constant - wouldn't my program just come up with the
>same random numbers everytime it is run?
>This may be a stupid question, but I simply doesn't follow you.. Care to
>explain more (plz :-)?
>-----Oprindelig meddelelse-----
>Fra: Linus Akesson <lairfight@softhome.net>
>Til: Thomas Turn Jensen <assembly-83@lists.ticalc.org>
>Dato: 11. september 1998 18:30
>Emne: Re: Sv: A83: Random values
>>
>>You don't. Use a constant, or the contents of some register at program start
>>or whatever. The random routines in the os always start with the same
number,
>>I think it is 0.94 or something the first time you use math->rand with new
>>batteries.
>>
>>Linus
>>
>>On 10-Sep-98, Thomas Turn Jensen wrote:
>>
>>>Great!....
>>>..ehm.. How do I get that Starting random # ?
>>
>>>-----Oprindelig meddelelse-----
>>>Fra: Linus Akesson <lairfight@softhome.net>
>>>Til: Thomas Turn Jensen <assembly-83@lists.ticalc.org>
>>>Dato: 10. september 1998 21:02
>>>Emne: Re: A83: Random values
>>
>>
>>>>
>>>>Random algorithms are quite numerous out there... one idea is to take the
>>>>previous random number you got, rotate it some, add some, eor some, then
>try
>>>>the program and see if there's a visible pattern. If there is, change some
>>of
>>>>the constants and try again...
>>>>
>>>>Linus
>>>>
>>>>On 10-Sep-98, Thomas Turn Jensen wrote:
>>>>>I need to get two random values...
>>>>>one in the range [0..94] and the other in [1..64] (yes you guesed it -
>it's
>>>>>for the graph-screen)
>>>>
>>>>>I've found a function called "_Random" but have no idea what parameters
it
>>>>>takes where - nor what/where the output is...
>>>>
>>>>>Could someone either explain to me how it works or tell me how to write
>>>>>something which results in the above mentined numbers. (If i get a
>function
>>>>>that results in a random byte thats ok - where I need it, speed isn't
>>>>>essential so I can just check it and if not good generate another random
>>>>>number)
>>>>>In case someone gives me some code, _plz_ explain what it does as I'm
more
>>>>>interesting in learning how to make it rather than always use other
>peoples
>>>>>code.
>>>>
>>>>>Thank you.
>>>>
>>>>>***
>>>>>Thomas Turn Jensen
>>>>>Icq uin => 8128636
>>>>>IRC, Undernet => Mukke
>>>>>***
>>>>>If your computer gives you trouble
>>>>>Call for Mukke on the double
>>>>>***
>>>>
>>>>
>>
>>
>>
>>
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