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by: Ben |
last post by:
Hi,
I need to write some data types into an array of unsigned chars.
These are basically "signals" within a message, so each signal will have
a start bit and a length. The signals will also have a type, one of:
unsigned long
signed long
float
double
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by: aku |
last post by:
I'm looking for the absolute fastest way
to count the nr of bits that are set to "1"
in a string. Presumably I then first need the
fastest way to do this in a byte.
I think this is it, but welcome any improvements:
i = 0;
if (g && 1) i++;
if (g && 2) i++;
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by: sathyashrayan |
last post by:
Group,
Following function will check weather a bit
is set in the given variouble x.
int bit_count(long x)
{
int n = 0;
/*
** The loop will execute once for each bit of x
set,
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by: barcaroller |
last post by:
I couldn't find a message-digest newsgroup, so I posted here. I have a C
function that converts a string of arbitrary length to a 32-bit hash value.
I realize this is overkill but I used OpenSSL's sha1() to convert the string
to a SHA-1 160-bit message digest.
The question is: how do I use these 160 bits to get my final 32 bits?
Should I use the first 32 bits or the last 32 bits or is there yet another
method?
Note: I understand...
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by: Oyvind Eriksen |
last post by:
Hello.
I need to read bits from bytes in a file.
I have code that works but it's very slow.
Can anybody help me?
The code I have is:
private bool GetBit(byte b, int pos)
{
return ((b & (byte)(1 << pos)) != 0);
}
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by: steve yee |
last post by:
i want to detect if the compile is 32 bits or 64 bits in the source
code itself. so different code are compiled respectively. how to do
this?
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by: Mack |
last post by:
Hi all,
I want to write a program to count number of bits set in a number.
The condition is we should not loop through each bit to find whether
its set or not.
Thanks in advance,
-Mukesh
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by: borophyll |
last post by:
As I read it, C99 states that a byte is an:
"addressable unit of data storage large enough to hold any member of
the basic character
set of the execution environment" (3.6)
and that a byte must be at least 8 bits:
"The values given below shall be replaced by constant expressions
suitable for use in #if
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by: JoeC |
last post by:
I am working on a graphics program but my question has nothing to do
with graphics but trying to get an algorithm to work. I set graphics
from a 16x16 grid to bits of a graphic with:
bitData = binTemp * 128 + binTemp * 64 +
binTemp * 32 + binTemp * 16 +
binTemp * 8 + binTemp * 4 +
binTemp * 2 + binTemp;
But I want to populate that same pad from bits:
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by: spasmous |
last post by:
Just wondering.
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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: 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: 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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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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