I'm trying to use the Fortran template library as show here. I don't know if there's some needed installation in order to use it. Should I download the zip file ?
I created a file called task.F90_template as shown in the link and it contains:
T function task(self,ww,pas,cpt ,nb_element,cpt1,dt,dx,p_element,u_prime,u_prime_moins,u_prime_plus,&
&taux,grad_x_u,grad_t_u,grad_x_f,grad_t_f,ax_plus,ax_moins,ux_plus,ux_moins,sm,flux,tab0,tab)
T::self,ww,pas,cpt,nb_element,cpt1,dt,dx,p_element,u_prime,u_prime_moins,u_prime_plus,&
&taux,grad_x_u,grad_t_u,grad_x_f,grad_t_f,ax_plus,ax_moins,ux_plus,ux_moins,sm,flux,tab0,tab
end function task
I don't understand also where to instantiate the template manually using the C preprocessor
#define T integer
#include "task.F90_template"
#define T real
#include "task.F90_template"
I want also to ask about the extension of the file tasks.F90_template since it doesn't get automatically colored.
Related
I have a gdnative library loaded in my godot. I can also call functions on it, that works. But I want to instantiate c++-Classes from it inside Godot.
I think I have to generate .gdns files for that to work, but i dont really find a example of that.
I created a .gdns script already with the New Script Dialogue. I named it exactly like the c++ class. And I set the Library in the scripts inspector and set ClassName to MyClass. But the following does not work as someClass is Null:
var someclass = load("res://MyClass.gdns").new();
someclass.method("myMethod");
What did I do wrong?
I tried to follow this tutorial.
Im Using Godot 1.1 and compiled the gdnative-library with the appropriate Godot-cpp headers.
I created a .gdns file with the New Resource Dialogue and it worked then (after setting the library and Class-name of the .gdns in the Inspector).
I'll add more here when I found out why it didn't work before.
The Situation
I am writing a wrapper library for GPIB communications for setting up specific instruments according to a clients specifications to automate some of their processes. I have to use C++ and the old '98 compiler in VC++ 6.0 running on a Windows NT machine to maintain compatibility with some other devices they use regularly.
I am trying to make a class that combines some GPIB commands into easier to remember functions, while also keeping the capability of directly communicating with the instruments. To that end, I have compiled different parts of my project into different libs and dlls, each dll being a different device that they might want to communicate with. I also made a generic dll base class from which all the specific instrument classes inherit, hopefully making the whole setup as modular as possible.
The Problem
So, with all that said, I have an issue when I try to test the different dlls/modules. I created a project to test the generic base class, added the .lib file to the project, which links to the .dll, and also #included the header file for that dll. testGeneric.cpp looks like this:
#include "GENERIC.h"
void main(void) {
GPIBInstrument hp(2); //connects to device at primary address #2
hp.write("*IDN?");
}
Super simple. To be clear, I also have the GENERIC.lib linked in the "Resource Files" folder in VC++ 6.0, and I have GENERIC.dll accessible from the path variable.
Moving on, GENERIC.h looks like this (select parts):
#ifndef GENERIC_H
#define GENERIC_H
#include <string>
#include <windows.h>
#include "decl-32.h"
#ifdef GENERIC_EXPORT
#define GENERIC_API __declspec(dllexport)
#else
#define GENERIC_API __declspec(dllimport)
#endif
...(Inline exception classes)...
class GENERIC_API GPIBInstrument {
...
public:
void write(std::string command);
...
};
#endif
Just showing the relevant methods. Then GENERIC.cpp:
#define GENERIC_EXPORT
#include "GENERIC.h"
...
void GPIBInstrument::write(std::string command) {
ibwrt (handle, &command[0u], command.length());
std::cout << command << std::endl;
if (ibsta & TIMO) {
timeoutError();
}
if (ibsta & ERR) {
error("Unable to write command to instrument: " + command);
}
}
So, looks pretty good right? No issues. Compiles fine. I try running it, and BLAM! I get this: "User breakpoint called from code at 0x77f7645c". So, then I thought, well maybe it would work if I put all the code from GENERIC.h and GENERIC.cpp into one file, and #included that file all as inline code. So I tried it, and it and it compiled nicely, and ran fine.
Question (<-AHA!... But...)
What am I doing wrong!? Something with the way I'm making the .dll? Or the .lib? Or something else entirely?
EDIT (WHY!?)
So, after a bit of debugging, I found that it was something to do with passing a string literal. So I just modified it to:
std::string command = "*IDN?";
hp.write(command);
and it worked fine. My followup question, is why? What's the difference between having a string literal passed, versus assigning that to a variable and then passing it in?
Using complex types such as std::string as a parameter at a DLL boundary is tricky. You must ensure that the exe and the DLL use the exact same instance of the library code. This requires that you build them both to use the same version of the DLL version of the runtime library.
I think this would increase the quality of life when devving, but google came up with nothing and I couldn't find anything specific inside inside Netbeans either.
What I want is to start with this header:
class bla
{
public:
static void gfg(somearg asd);
};
Then I open the blank bla.cpp and pressed 'autoimplement'. After that, it would look like this:
#include "bla.h"
static void bla::gfg(somearg asd)
{
//TODO: implement
throw unimplemented("void bla::gfg(somearg) is unimplemented");
}
Anyone know of a tool like this?
I found http://www.radwin.org/michael/projects/stubgen/
"stubgen is a C++ development tool that keeps code files in sync with their associated headers. When it finds a member function declaration in a header file that doesn't have a corresponding implementation, it creates an empty skeleton with descriptive comment headers."
This looks like it does exactly what you want it to do.
Some time has passed and in the meantime the requested feature seems to have been implemented in netbeans. Refer to https://netbeans.org/bugzilla/show_bug.cgi?id=213811 , which also gives a description on how to use it:
Note:
Implemented CTRL+SPACE.
IDE suggest implementing of class method if CTRL+SPACE was pressed:
- inside file that already has at least one method definition
- between method declarations
I'm using Eclipse + Qualcomm libraries (in cpp) + Android SDK on Ubuntu. My application runs fine. If I change some code in the qualcomm libraries, it compiles and works correctly.
The problem is: I have changed the name of the project, and I have to change some code in cpp (The name of the function), if I don't do it, I get a Java.lang.UNSATISFIEDLINKERROR.
That's because all the functions have the name as the Android package like this:
Java_org_myproject_marker_MainActivity_onQCARInitializedNative(JNIEnv *, jobject)
Then I define a macro like this:
#define MAIN_ACTIVITY_PREFIX org_myproject_marker_MainActivity
#define VISUALIZER_PREFIX org_myproject_marker_Visualizer
And I change all the correct functions by:
Java_MAIN_ACTIVITY_PREFIX_onQCARInitializedNative(JNIEnv *, jobject)
but I am still getting the Java.lang.UNSATISFIEDLINKERROR exception.
It works if I do it without the #define macro (and write all the lines), but I want to save the cpp code with a top define that changes everything automatically if I need to use it in other projects.
I have read this tutorial. Can't I replace a text inside another text or something like that?
you are looking for string concatenation, like this:
#define MAIN_ACTIVITY_PREFIX(n) Java_org_myproject_marker_MainActivity##n
and then use it like this:
MAIN_ACTIVITY_PREFIX(_onQCARInitializedNative)(JNIEnv *, jobject)
Indeed, a CPP macro wont be expanded in the middle of an identifier. Try with
#define MAIN_ACTIVITY_PREFIX(func) Java_org_myproject_marker_MainActivity##func
That gives you a macro that will prepend Java_org_myproject_marker_MainActivity to the function name you pass it. Use it as:
MAIN_ACTIVITY_PREFIX(_onQCARInitializedNative)(JNIEnv *, jobject) {
...
}
I am doing my first steps in IPhone developing. I want to use some c\c++ code but I can't find any reference of how it's done (will very appriciate if you can also refer me to your source when you give an answear)
I have a file called calc.h containing a "calculator" class with simple add and mult functions, I imported it exactly as I did with an Objective-C header file. What am I suppose to do now?
Whatever you were doing when you were coding just in C/C++.
For example:
#include "calc.h"
....
-(void) testCode { //obj-c
float x = 3;
float y = 8.0;
float sumOfTwo = sum(x, y);
}
Assuming that you have a function named sum in your header file similar with the one used above.
If you use standard extensions for the source files (e.g. .cpp / .c) you can simply build them without doing anything special.
If you use uncommon extensions you need to set the file type manually: In File → Get Info set File Type to sourcecode.cpp.cpp / sourcecode.c.c.
Note however that you can't use C++ in plain Objective-C (.m) files - if you want to do that you need to use Objective-C++ (.mm) instead.
For using C there is no such restriction as Objective-C is a superset of C - as with C++ you may need to watch out for uses of identifiers that are keywords in Objective-C though.