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by: Sydex |
last post by:
When I compile code I get error
C2664: 'Integration::qgaus' : cannot convert parameter 1 from 'double
(double)' to 'double (__cdecl *)(double)'
in this part :
double Integration::quad2d(double (*func)(double,double))
{
nfunc = func ;
return qgaus(f1,x1,x2);//error there
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by: Anonymous |
last post by:
Is there a non-brute force method of doing this?
transform() looked likely but had no predefined function object.
std::vector<double> src;
std::vector<int> dest;
std::vector<double>::size_type size = src.size();
dest.reserve(size);
for (std::vector<int>::size_type i = 0;
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by: Bjørn Augestad |
last post by:
Below is a program which converts a double to an integer in two
different ways, giving me two different values for the int. The basic
expression is 1.0 / (1.0 * 365.0) which should be 365, but one variable
becomes 364 and the other one becomes 365.
Does anyone have any insight to what the problem is?
Thanks in advance.
Bjørn
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by: Robert Palma |
last post by:
I'm having trouble figuring out how to pass a
pointer to a double array (1 dimensional)
to a C function.
Declaring array as: double xx;
Declaring func. int process( double *input )
Calling func. as one of the following:
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by: Bryan Parkoff |
last post by:
The guideline says to use %f in printf() function using the keyword
float and double.
For example
float a = 1.2345;
double b = 5.166666667;
printf("%.2f\n %f\n", a, b);
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by: BlueTrin |
last post by:
I am using a DLL written in C, it uses some pointers on functions, I
have defined a wrapper around it in C# which uses some delegates:
#region Delegates and Marshalling to call solvopt
public delegate double funCallback(double x);
public delegate double funcCallback(double x);
public delegate void gradCallback(double x, double v);
public...
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by: lcw1964 |
last post by:
This may be in the category of bush-league rudimentary, but I am quite
perplexed on this and diligent Googling has not provided me with a
clear straight answer--perhaps I don't know how to ask the quesion.
I have begun to familiarize myself here with the gcc compiler in a
win32 environment, in the form of MinGW using both Dev C++ and MSYS as...
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by: JWest46088 |
last post by:
I keep getting these error messages:
area(double,double) in Rectangle cannot be applied to ()
return "Area: " + Rectangle.area() + "\tCircumference: " + Rectangle.perimeter(); ^
perimeter(double,double) in Rectangle cannot be applied to ()
return "Area: " + Rectangle.area() + "\tCircumference: " +...
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by: dj10fld |
last post by:
I am getting a (cannot convert double to double in assignment errors) here is a part of my code
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
#define MaxSize 1000
double loancalc (double *months, double *intrat, double *princ, double calcprnc, double calcpay, double calcbal, double calcnew, double...
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by: Genro |
last post by:
#include<stdio.h>
#include<TX/graphics.h>
#include<time.h>
// I need help!
struct Krug{
double _x;
double _y;
double _skox;
double _skoy;
double _granx1;
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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...
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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. ...
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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...
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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...
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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...
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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...
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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...
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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...
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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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