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by: Michael B. Trausch |
last post by:
I have a question regarding bitwise operators, I've been trying to
figure this out for about two days now, and I just can't seem to get it.
What I'm trying to do is use a variable to hold a bitmask of 'flags'
for users on a website. The function below is supposed to be a search
function for one of those flags in a particular thing.
The idea is that when something calls userId(), it should get to see
what type of user flags that are...
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by: sandy_pt_in |
last post by:
How to mulitply two integer numbers using bitwise operators in C
language.Please reply as early as possible
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by: Steve Summit |
last post by:
-----BEGIN PGP SIGNED MESSAGE-----
It's often explained that the reason for some of the imprecision
in C's definition is so that C can be implemented on different
kinds of machines -- say, those with 2's complement,
1's complement, or sign-magnitude arithmetic. But the followup
remark is sometimes also made that the choice of arithmetic isn't
completely unconstrained, since the bitwise operators seem to
presume a base-2 machine.
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by: Christopher Weaver |
last post by:
I know that the bitwise AND of 8 and 4 will return 0 or false and the
bitwise AND of 8 and 9 will return 1 or true but I don't know how to write
the synax for it in C#. I have a value that ranges from 0 to 15 and I need
to compare it to 15 in order to find if it contains the values 1, 2, 4, or
8.
To represent it more graphically, the value 1010 when ANDed with 1000 or
0010 will produce either true or a value greater than 0. I believe...
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by: Bill Dee |
last post by:
I need help converting a tiny piece of code which uses the bitwise
complement operator from C# to VB.NET.
In C# I currently have this:
long useThis = Myclass.ALLCONSTANTS;
long doNotUse = Mycalls.ABC | Myclass.XYX;
long useThis &= ~doNotUse; bitwise removal of flags not to use
How do I convert this to VB.NET? I know to use "OR" instead of " | "
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by: Emilio |
last post by:
Do I use 'or' for bitwise operations where in c# I use | ?
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by: Marc |
last post by:
I'm trying to set the first three bits to zero on a byte. For some reason,
the compiler is casting the number peculiarly when I use the bitwise
complement operator.
Here's what I think should work but doesn't:
byteArray &= ~0xe0; // set the first three bits to 0 (11100000 == 0xe0)
The error is "Constant value '-225' cannot be converted to a 'byte'".
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by: zirconx |
last post by:
I'm trying to understand how the bitwise AND can be used. I've read
about what it does but am having trouble applying it practically. I'm
working on a system that somebody else wrote and they make use of a
MODE flag that gets passed in. They then compare the mode flag against
a hard coded value using bitwise AND, and then show or don't show
certain features based on the mode. Example pseudocode:
if (mode & 1) do something
if (mode...
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by: Junmin H. |
last post by:
Hello, all. I never use them when I am programming.
But i have been reading codes that using them.
When should I use them? Why not use char/short/int/long?
Is it very important to know them well? Because it's binary,
I found that it's a little difficult to understand then decimal.
Thanks.
Junmin H.
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by: Daniel Gutson |
last post by:
Hi,
I just wanted to share another library for doing type-safe bitwise
operations in C++:
http://bitwise-enum.googlecode.com
I found it useful, so hopefully it'll be for somebody else as well.
BRgds,
Daniel.
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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