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From:	niklaus AT gamebox DOT net (Niklaus)
Newsgroups:	comp.os.msdos.djgpp
Subject:	typecast internals
Date:	4 May 2004 00:58:40 -0700
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To:	djgpp AT delorie DOT com
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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
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