delorie.com/archives/browse.cgi | search |
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: | <d06ac2eb.0405032358.6c5035f1@posting.google.com> |
NNTP-Posting-Host: | 210.18.90.1 |
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 -
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |