Path: utzoo!utgpu!water!watmath!clyde!bellcore!rutgers!cbmvax!carolyn
From: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Questions
Message-ID: <3814@cbmvax.UUCP>
Date: 18 May 88 15:00:08 GMT
References: <97800008@silver> <3779@cbmvax.UUCP> <702@applix.UUCP>
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner CATS)
Organization: Commodore Technology, West Chester, PA
Lines: 27

In article <702@applix.UUCP> scott@applix.UUCP (Scott Evernden) writes:
>In article <3779@cbmvax.UUCP> carolyn@cbmvax.UUCP (Carolyn Scheppner CATS) writes:
>>>        Where can I find the random number routine for use with C?
>>
>>It's in amiga.lib and it is called RangeRand() and it is documented in the
>>amiga.lib.doc in the A-W RKM Exec manual.  Usage is RangeRand(n) where n
>>is a number from 1 to 65535 and represents the high limit for your random
>
>Is it true there is no way to seed RangeRand()?  Also, what the heck
>is the use of FastRand()??


Currently, Amiga.lib has an xdef'd variable called _RangeSeed (in C that
would be extern ULONG RangeSeed).  It starts out initialized to 0.
I think each call to RangeRand updates it.  You could set it yourself.

There is an _FastRand routine which is commented as a quick way to
generate a random number.  It wants a 32-bit seed passed on stack,
and returns a new 32-bit seed in d0.


-- 
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Carolyn Scheppner -- CATS   >>Commodore Amiga Technical Support<<
                     UUCP  ...{allegra,ihnp4,rutgers}!cbmvax!carolyn 
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