X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f From: niklaus AT gamebox DOT net (Niklaus) Newsgroups: comp.os.msdos.djgpp Subject: typecast internals Date: 4 May 2004 00:58:40 -0700 Organization: http://groups.google.com Lines: 44 Message-ID: NNTP-Posting-Host: 210.18.90.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1083657521 17116 127.0.0.1 (4 May 2004 07:58:41 GMT) X-Complaints-To: groups-abuse AT google DOT com NNTP-Posting-Date: Tue, 4 May 2004 07:58:41 +0000 (UTC) To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Hi, I would like to know more about casts.What exactly happens when casts are applied to a variable.I know that if an object of type int is applied an cast of float the result would be of type float. 1) What i would like to know is the about the internals when a cast is applied ? Say we have int i = 3; double j; j = (double) i; What happens in the above statement ? Can someone explain me at bit level or a considerable explantion ? 2) Also i would like to know what happens say i = (int)j; Again an explanation at the bit level would be very helpful. If we have 3) float f = 4.3; int i; i = (int) f; What happens here ? How does the truncation take place ? 4) Is it similar to how int got promoted to double in the question 2. 5) How are side effects defined ? When do i say typecasting is an side effect ? 6) Is truncation a side effect of type casting or not ? Nik -