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From: mwm@pa.dec.com (Mike (My Watch Has Windows) Meyer)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: 4 bytes to a long?
Message-ID: <MWM.91Jun9100637@raven.pa.dec.com>
Date: 9 Jun 91 17:06:37 GMT
References: <451.28517f01@beach.gal.utexas.edu>
Sender: news@pa.dec.com (News)
Organization: Missionaria Phonibalonica
Lines: 28
In-Reply-To: mrimages@beach.gal.utexas.edu's message of 9 Jun 91 07:06:09 GMT

In article <451.28517f01@beach.gal.utexas.edu> mrimages@beach.gal.utexas.edu writes:

	   Is there a fast, simple way to convert 4 bytes into a long? I am
   doing it presently this way, but it seems kind of kludgy:

   union 	{
	   long tlong;
	   char tchar[4];
	   } mytime;

   for(i=0;i<4;i++)
	   mytime.tchar[i]=block[i];
   sprintf(tempstr,"%s",ctime(&mytime.tlong));

   Any suggestions or is this the best I can do?

It's not portable is one problem. Doing the conversion explicitly is
both portable, and seems a little cleaner:

sprintf(tempstr, "%s", ctime((((((block[3] << 8) + block[2]) << 8) +
					block[1]) << 8) + block[0]));

	<mike
--
That time we slept together				Mike Meyer
That's as far as it went				mwm@pa.dec.com
Yet though we're not quite lovers			decwrl!mwm
You're more than a friend