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by: norb1 |
last post by:
After tracking down a bug in my Fortran program, I found that it
assumed
max(NaN,0.) = 0.
This makes no sense, as the outcome of the operation is undefined and
should be NaN.
max(NaN,0.) = NaN
After researching, it appears the first outcome is accepted behavior,
and might be included in the revised IEEE 754 standard, which affects
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by: Priya |
last post by:
Halo.
I am using isinf() & isnan() in my code, and i get an error
error LNK2001: unresolved external symbol "int __cdecl isnan(double)"
(?isnan@@YAHN@Z)
my code is the implementation of LambertW function
#include <math.h>
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by: zl2k |
last post by:
hi,
Can someone let me know the command to check if a value is inf or NaN
in c++? I am using gcc in linux. Thanks for help.
zl2k
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by: horacius.rex |
last post by:
Hi,
I have a code that in some part of the program calculates 1/x for a
lot of different x's. About 1 of 100 times x is equal to zero, so when
I print the result I obtain inf. I wonder if there is a way to detect
this "infinity" and convert it to the float zero. I mean something
like
for i = ....
calculate 1/x_i
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by: istillshine |
last post by:
In my code I used NAN and isnan(x). I found they were convenient to
use. I also noticed that
older C standard does not support NAN and isnan(x).
When I compiled my program using:
gcc -Wall -c
it was fine.
|
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by: void main |
last post by:
I'm rather new to complex numbers in C and was wondering, how do I
initialize a complex variable properly if the imaginary part is 0.
I tried
--------
#include <complex.h>
float complex c = 1.0f;
--------
|
by: Richard Tobin |
last post by:
The GNU Autoconf manual provides a work-around for missing isinf()
and isnan() functions, which exist in C99 and many, but not all,
pre-C99 implementations:
http://www.gnu.org/software/libtool/manual/autoconf/Function-Portability.html
The given definition of isinf(x) boils down to return isnan (x - x),
which will return true for NaNs. Surely this is wrong?
-- Richard
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by: MM |
last post by:
Hi to all,
I'm trying to import a tab separated values file onto Excel with the
following script:
import csv
from pyExcelerator import *
w = Workbook()
worksheet = w.add_sheet('sim1')
|
by: john.goodleaf |
last post by:
I'm poking at writing data out to a SAS XPORT file (transport file).
Each record must be 80 bytes long, ASCII. Integers should be "IBM-
style integers" and floats should be "IBM-style doubles." Now I have
some idea what that means from reading a C source file documented by
the SAS institute, but before I go over the deep end trying to write
my own routines, does anyone know of an already-done means of writing
integers and floats out to...
|
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: 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...
|
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: 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: 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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