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RAVL, Recognition And Vision Library |
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Ravl - Core - Indexing - IndexC |
IndexC | |
Index class for indexing 1D arrays: an integer class with modified rounding and other operations | |
include | "Ravl/Index.hh" |
Created: | 2/1/1996 |
User Level: | Basic |
Library: | RavlCore |
Example: | exIndex.cc |
In Scope: | RavlN |
int
type, in an attempt to correct some of the perceived
deficiencies of int
:
(unsigned int) 4 / (-2) = 0
.
int
type, rounding is either towards zero (e.g. on conversion
from floating point representations), or implementation-dependent (e.g.
integer division operations). Where negative numbers are
involved, this behaviour is often not what is required, particularly for
indexing purposes.
int
, to
provide more consistent behaviour for indexing purposes, and to improve
portability of code.
The major differences between IndexC and int
are:
int
type, the results would probably be -1 and -1 respectively.
int
. For
a class, the type of the first operand of binary operator determines
the class member function used.
int
, you can't use IndexC everywhere you would use an
int
. In particular you can't use an IndexC object directly as
an int
function argument. You need to use the V() member function to achieve this. (We could have provided the implicit conversion, but it would then be very difficult sometimes to know which was actually being used.) Maintainer:Radek Marik, Created: 2/1/1996, Documentation by CxxDoc: Tue Aug 13 09:59:02 2002 |