[Pmaroul]

Hi all.

I saw into the previous forums a fairly strange user defined macro as follows:

int neighborcell(cell_t c, Thread *t, cell_t *cn, Thread **tn, int n).

This macro isn't defined in cell macros in UDF programming. That is probably defined for the first time by a user.

Hereby, One question comes up to me:

How can we define a new macro or function to be inserted in UDF programming?

Thanks in advance for any answer!

P.Maroul

[AlexanderZ]

same way as function in C language

best regards

[pakk]

Originally Posted by Pmaroul

Hi all.

I saw into the previous forums a fairly strange user defined macro as follows:

int neighborcell(cell_t c, Thread *t, cell_t *cn, Thread **tn, int n).

This macro isn't defined in cell macros in UDF programming. That is probably defined for the first time by a user.

Hereby, One question comes up to me:

How can we define a new macro or function to be inserted in UDF programming?

Thanks in advance for any answer!

P.Maroul

You gave an example of how to define a function.
And then you ask how to define a function...


You have answered your own question before you asked it!

[Pmaroul]

Originally Posted by pakk

You gave an example of how to define a function.
And then you ask how to define a function...


You have answered your own question before you asked it!

Thanks Sir.

Ok, but I indicated only a function title . My main question is that where and how to define or recall in macros.

For example, Is it essential to define it in UDF.h or can we define it everywhere in udf macros for example in define-adjust?

[Pmaroul]

Originally Posted by AlexanderZ

same way as function in C language

best regards

Thanks a lot.

Therefor, I can define some new functions before UDF macros and then using them in those macros. Isn't it?

[AlexanderZ]

You are making things complicated.
Macros are build in fluent functions, nothing else. You cant modify them (may be can, but not recommended)
On the other hand, you may create file with your own function (or put these functions in your source file for each UDF). When you will compile your UDF hook this file with UDF source. Same as in C

best regards

[Pmaroul]

Dear Alexander


Therefor, Can I write a file (for example file name: udfexample.c) with following structure? Is it correct?

int neighborcell(cell_t c, Thread *t, cell_t *cn, Thread **tn, int n)
{
.
.
/*  function commands here written*/
.
.
}

/*for example define_init*/

#include "udf.h"
DEFINE_INIT(my_init_func,d)
{
.
.
.
/* text commands here*/
.
.
.
}

[AlexanderZ]

#include "udf.h"
in the first line

you should execute your function from one of Fluent macros. (for example from DEFINE_INIT)

best regards

[Pmaroul]

How is the following one?
Is it true?

#include "udf.h"
DEFINE_INIT(my_init_func,d)
{/* function definition immediately starts after define init calling*/
int neighborcell(cell_t c, Thread *t, cell_t *cn, Thread **tn, int n)
{
.
.
/*  function commands here written*/
.
.
}/* The end of fuction definition*/

/*First lines of define _init after function definition */
.
.
.
/* text commands here*/
.
.
.
}

[AlexanderZ]

#include "udf.h"
int neighborcell(cell_t c, Thread *t, cell_t *cn, Thread **tn, int n)
{
.
.
/*  function commands here written*/
.
.
}

/*for example define_init*/

DEFINE_INIT(my_init_func,d)
{
.
.
.
/* text commands here*/
// if you want execute your function:
neighborcell(c, t, cn, tn, n) // of course c , t , cn ,tn, n values should be defined

.
.
.
}

best regards

[Pmaroul]

Dear Alexander

Your Answers was so helpful.
Thanks a lot for your kind attention.

P.Maroul