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by: tarmat |
last post by:
I'm trying to create a function that will turn a float into a
std::string that always shows the number to two decimal places. I have
the following but it doesn't give the desired output:
inline std::string ftos(float f)
{
std::ostringstream buffer;
buffer << std::setprecision(2) << f;
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by: Roger Leigh |
last post by:
Hello,
I'm writing a fixed-precision floating point class, based on the ideas
in the example fixed_pt class in the "Practical C++ Programming" book
by Steve Oualline (O' Reilly). This uses a long int to store the
value, and the precision (number of decimal points) is variable (it's
a templated class):
template <size_t _decimal_places = 4>
class FixedFloat {
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by: Dylan Nicholson |
last post by:
Been playing around with this all day, and haven't found a solution I
like yet.
Assuming some initial function:
void foo(std::string& src)
{
src += "some fixed string";
src += bar();
src += "some other fixed string";
|
by: Joshua Kolden |
last post by:
STL allocators are templates so that when you write one you are obliged
to make it work with any type. However, the Intel IPP library that we
use has memory aligned allocators for each of 15 different types. For
example an 8 bit unsigned array is allocated with ippsMalloc_8u(size).
So I want to create memory aligned allocators for use with the STL (in
particular the vector container) that is fast (due to alignment), and
pointer...
|
by: simon |
last post by:
Hi,
First some background.
I have a structure,
struct sFileData
{
char*sSomeString1;
char*sSomeString2;
|
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by: jortizclaver |
last post by:
Hi,
I'm about to develop a new framework for my corporative applications
and my first decision point is what kind of strings to use: std::string
or classical C char*.
Performance in my system is quite importante - it's not a realtime
system, but almost - and I concern about std::string performance in
terms of speed. No doubt to use std implementation is a lot easier but
I can't sacrifice speed.
|
by: ma740988 |
last post by:
Consider:
#include <iostream>
#include <sstream>
#include <string>
int main ( ) {
{
double pi = 3.141592653589793238;
std::stringstream a;
|
by: uday.sen |
last post by:
Hi,
I am porting a piece of code from VC++ to linux platform. My compiler
is g++ 3.2.2. I am getting following error:
no matching function for call to A::setResponse(std::wstring)
candidates are A::setResponse(std::wstring &) ---> This is
indeed the signature
I am using this function as:
|
by: sposes |
last post by:
Im very much a newbie but perhaps somehone can help me. Ive been
searching for a way to convert a std::string to a unsigned char*
The situation is I have a function that wants a unsigned char* and I
want to give it a std::string
no matching function for call to `MD5::update(std::string&, size_t)'
candidates are: void MD5::update(unsigned char*, unsigned int)
void PrintMD5(string str){
|
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...
|
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...
|
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...
|
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();...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
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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