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by: Francois Grieu |
last post by:
The values of ((int)0.7) and ((int)-0.7) seem to be 0
Is this independent of implementation ?
TIA,
François Grieu
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by: Allin Cottrell |
last post by:
OK, I realize that what I am asking here is not likely to have a
answer within the C standard. Nonetheless, it is not specific
to any particular platform, so I'll hazard the question anyway.
A C double can be aliased by an array of unsigned char, to which
any desired byte pattern may be written. Is there any somewhat
portable way of assigning a byte pattern such that the result
will, with very high probability, _not_ count as a valid...
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by: Daniel Vallstrom |
last post by:
I'm having problems with inconsistent floating point behavior
resulting in e.g.
assert( x > 0.0 && putchar('\n') && x == 0.0 );
holding. (Actually, my problem is the dual one where I get
failed assertions for assertions that at first thought ought
to hold, but that's not important.)
At the end is a full program containing the above seemingly
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by: rupert |
last post by:
i've got the following code:
#include <iostream>
#include <string>
#include <vector>
#include <iomanip>
using namespace std;
int main(double argc, char* argv) {
double r = 0.01;
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by: richard_lavoie |
last post by:
Hi,
I have something like this:
vector<floatvec1;
and I want to cast it, so I use
vector vec2<double= static_cast< vector<double(vec1);
I always become a
error: syntax error before `>' token
in that line
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by: Ole Nielsby |
last post by:
First, sorry if this is off-topic, not strictly being a C++ issue.
I could not find a ng on numerics or serialization and I figure
this ng is the closest I can get.
Now the question:
I want to serialize doubles in human-readable decimal form
and be sure I get the exact same binary values when I read
them back. (Right now, I don't care about NaN, infinities etc.)
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by: VK |
last post by:
http://groups.google.com/group/comp.lang.javascript/browse_frm/thread/
b495b4898808fde0>
is more than one month old - this may pose problem for posting over
some news servers. This is why I'm starting a new one]
I'd still like to finish this rounding mess. As a startup lemma we can
take that VK is the worst programmer of all times and places: let's
move from here forward please.
The usability of any program depends on exact behavior...
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by: Wayne Shu |
last post by:
Hei everyone:
Just see the output of the following program
#include <iostream>
#include <cstdlib>
#include <limits>
int main()
{
std::cout << "minimum exponent of double: " <<
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by: euler70 |
last post by:
char and unsigned char have specific purposes: char is useful for
representing characters of the basic execution character set and
unsigned char is useful for representing the values of individual
bytes. The remainder of the standard integer types are general
purpose. Their only requirement is to satisfy a minimum range of
values, and also int "has the natural size suggested by the
architecture of the execution environment". What are the...
|
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...
|
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,...
|
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...
|
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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
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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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