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by: Alex Vinokur |
last post by:
Dann Corbit has implemented function
int ilog2 (unsigned long)
at http://groups.google.com/groups?selm=lkPa4.2165%24I41.1498%40client
Is exist a similar C++-function for very large numbers, e.g., function with signature
vector<unsigned long> ilog2 (const vector<unsigned long>&)?
--
Alex Vinokur
email: alex DOT vinokur AT gmail DOT com
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by: Todd Steury |
last post by:
Greetings Python'ers:
I'm just an amature who occasionally uses Python for complex mathematical
models. The current model I'm working with occasionally generates really
large numbers that are either "float" or "complex" types. These numbers are
so large that I either get an overflow error, or some funky code like #INF
or 1.#INDj. However I really need these numbers to be calculated (although
precision isn't key). Is there a way to get...
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by: Scott |
last post by:
I have a customer that had developed an Access97 application to track
their business information. The application grew significantly and
they used the Upsizing Wizard to move the tables to SQL 2000. Of
course there were no modifications made to the queries and they
noticed significant performance issues. They recently upgraded the
application to Access XP expecting the newer version to provide
performance benefits and now queries take...
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by: Zero |
last post by:
Hi,
I am calculating an integer to the pwer of a large integer, e.g.
2^5000.
It turns out that the result I always get is zero. I am sure that the
result is too large to store in such type as u_int64_t and long int
etc.
My power function is as follows: for(i=0; i<5000; i++) result *= 2;
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by: Ruy Castelli |
last post by:
Hello,
I'm learning to code in C# and I created a DataGrid component, which I
couldn't get it to work properly either using "Next >>" and "<< Previous"
buttons or using actual page numbers.
When I use the "Next" and "Previous" buttons, I move on one page (going from
page 1 to 2). Then if I click next on page 2, it comes back to page 2. I
checked my code several times and I can't find anything wrong with it. If I
click on Previous, it...
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by: MDoyle |
last post by:
Here is the easiest question you’ll get all day from a complete newbie.
I installed Visual Studio on my laptop last night and have been tryin
to write my very first C# programs this morning. I’m running into
few issues that I’m sure someone on this forum will be able to help m
understand quickly.
I started out with a traditional “Hello World” program, again, my firs
C# programs. I was surprised to see how the System namespace wa...
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by: zephyrus360 |
last post by:
This is about a technique to find the mod of a very large integer with a normal small integer.
I recently encountered this problem when I needed to compute the modulus of a very large number with a normal integer. I needed this in a C++ program running on a 32-bit UNIX platform. The problem was that the number was 28 digits long and no native datatype in c++ could store a number of that size.
(Eg: 1088263455689473669888943602 % 380)
Not...
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by: Ant |
last post by:
Hi all,
I have a question on PyParsing. I am trying to create a parser for a
hierarchical todo list format, but have hit a stumbling block. I have
parsers for the header of the list (title and description), and the body
(recursive descent on todo items).
Individually they are working fine, combined they throw an exception.
The code follows:
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by: stararic |
last post by:
hi, I'm writing a program a kind of calculator that should work with very big numbers (thousand of digits). So, numbers are rappresented by a struct that contains a pointer to integer, e 2 int for dimension of the array e number of digits.
the pointer is than used for the malloc of the array...
my 2 problems are:
1)some time, when I use my exp function I get the error:
*** glibc detected *** ./a.out: free(): invalid size: 0x0975a328...
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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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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