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by: Elaine Jackson |
last post by:
Is there a function that takes a number with binary numeral a1...an to the
number with binary numeral b1...bn, where each bi is 1 if ai is 0, and vice
versa? (For example, the function's value at 18 would be 13
.) I thought this was what the tilde operator (~) did, but when I
went to try it I found out that wasn't the case. I discovered by experiment (and
verified by looking at the documentation) that the tilde operator takes n
to -(n+1)....
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by: J. Campbell |
last post by:
When the bitwise NOT operator, is placed in front of an integer
variable type (bool, char, short, int, long), the return value is a
signed int, regardless of the variable type. An example can be seen
in this code:
#include<iostream>
using namespace std;
int main(){
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by: Christopher Benson-Manica |
last post by:
I'm trying to compute the absolute value of an integer using only bitwise
operators...
int x;
sscanf( "%d", &x );
printf( "%d\n", (x^((~((x>>31)&1))+1)) + ((x>>31)&1) );
That works, but it assumes 32 bit integers. Is there a portable/standard way
to do this? Or are ANSI integers always 32 bits? If not, is using
sizeof(int) * 8 - 1 as the shift value an acceptable alternative?
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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: shdwsclan |
last post by:
I am native to various languages but bitwise operators just kill me. I see how much I take object oriented languages for granted. I like all the other c derivitives but ANSI C is making me loose my hair....especially ANSI C's bitwise operators.....
For reference i come from the (Java/C#/C++) realm and was never forced to use these.
Many people dont understand these....I tried to make sense....I know the truth tables...and I can do simple...
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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: subramanian |
last post by:
Consider the following code:
#include<stdio.h>
int main(void)
{
unsigned char c = 0;
unsigned int i = ~c;
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by: somenath |
last post by:
Hello All,
I was trying to learn bitwise operator in C .In that process I cam
across one resource as mentioned bellow
http://graphics.stanford.edu/~seander/bithacks.html#OperationCounting
I have one question regarding the section
"Compute the minimum (min) or maximum (max) of two integers without
branching"
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by: DDAVE2010 |
last post by:
I currently have the display method down, but I am not sure where to go with the main method...
Write a program that uses bitwise operations to: (1) generate and display all power-of-two number in the range +128 to -128 and (2) dispaly an arbitrary user-input integer.
main method:
*declare int number = 128: got this
*include a while loop that loops while number is >=-128: I think i have this
*call the display method, which...
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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: 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: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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