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Cary Haynie wrote:

>Those errors look would suggest that your missing a header file or something.  
>  
>
Actually, it suggests that the lib is missing from the linking stage.

>>I am still getting the same errors even with fftw-2.1.5. version.
>>
>>c:\dev-c++\examples\fft\fft.o(.text+0x29):fft.cpp: undefined reference
>>to `fftw_malloc'
>>    
>>
I didn't test the 2.1.5 version (I don't even know what's a FFT library 
for), but the 3.0.1 binary available at http://www.fftw.org works out of 
the box.
Seems that you aren't linking to the lib. Make sure to put every file in 
its right place. The .h file goes to the include folder, the .dll goes 
to somewhere in your path, and the other files go to your lib folder. 
Then in your project options you have to add the .lib file to the linker 
options.
This (from 
http://www.fftw.org/fftw3_doc/Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs 
) compiles and runs fine:

---
#include <fftw3.h>

int main(void)
{
        fftw_complex *in, *out;
        fftw_plan p;
        int N=16;

        in = fftw_malloc(sizeof(fftw_complex) * N);
        out = fftw_malloc(sizeof(fftw_complex) * N);
        p = fftw_plan_dft_1d(N, in, out, FFTW_FORWARD, FFTW_ESTIMATE);

        fftw_execute(p); /* repeat as needed */

        fftw_destroy_plan(p);
        fftw_free(in); fftw_free(out);
        return 0;
}
---


Daniel K. O.

On 21 Oct 2004 at 16:25, Teboho Nyareli wrote:

> When using FFTW
> 3.01 binaries I add the fftw3.lib file via the menu  project-> object
> file or linker options in the Dev-C++.

.lib?  I believe that's your problem.  You should be linking a .a file not a .lib file.

Watson (the pencil neck) Davis

(struct sockaddr*)  -- typecast to a pointer that points to a sockaddr struct

&socketaddress -- address of socket address.

basically it creates a pointer (reference) to socketaddress of the
struct sockaddr type.





On Thu, 21 Oct 2004 23:25:37 +0900, Peter Dennis <don...@ne...> wrote:
> Hi
> 
> Can someone please explain what this code of line means:
> 
> bind( sock, (struct sockaddr*)&socketaddress, sizeof(struct sockaddr);
> 
> I know it means that I am binding the socket with the address structure
> but what is the:
> (struct sockaddr*)&socketaddress part?
> 
> Is this something like a pointer called sockaddr that holds a struct and
> then references? socketaddress?
> 
> Any help interpreting this would be great.
> 
> Many thanks,
> 
> Peter.
> 
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Hi,
I have included the example code from FFTW 3.01 tuturial. I just
replaced fft_plan_dft_1d( ) and fftw_excute( ) with fftw_create_plan and
fftw_one when using the binaries from FFTW 2.1.5.  I also replace the
header file fftw3.h with the ones shown below. When using FFTW 3.01
binaries I add the fftw3.lib file via the menu  project-> object file or
linker options in the Dev-C++. When using the FFTW 2.1.5 binaries, I add
the libfftw.* files to the lib folder.  It still doesn't work with this
changes.


#include <stdlib.h>
#include <fftw.h>
#include <rfftw.h>

int main()
 {
     int N = 256;
     fftw_complex *in, *out;
     fftw_plan p;
     in = (fftw_complex*)fftw_malloc(sizeof(fftw_complex) * N);
     out = (fftw_complex*)fftw_malloc(sizeof(fftw_complex) * N);
     p = fftw_create_plan(N,FFTW_FORWARD,FFTW_ESTIMATE);
     fftw_one(p,in,out);
      //p = fftw_plan_dft_1d(N, in, out, FFTW_FORWARD,FFTW_ESTIMATE);
      //fftw_execute(p); /* repeat as needed */
      fftw_destroy_plan(p);
      fftw_free(in);
      fftw_free(out);
      system("PAUSE");
      return 0;
 }

thanks again
Teboho



>>> Cary Haynie <xen...@gm...> 21/10/2004 15:11:55 >>>
Those errors look would suggest that your missing a header file or
something.  
I dont know what headers that fftw uses, but thats where I would
start.  Also make sure that that there is a 'using namespace <name>;'
statement, if one is required.


On Thu, 21 Oct 2004 11:31:13 +0200, Teboho Nyareli
<tny...@cs...> wrote:
> Hi Siva,
> I am still getting the same errors even with fftw-2.1.5. version.
> 
> c:\dev-c++\examples\fft\fft.o(.text+0x29):fft.cpp: undefined
reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x42):fft.cpp: undefined
reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x58):fft.cpp: undefined
reference
> to `fftw_create_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x74):fft.cpp: undefined
reference
> to `fftw_one'
> c:\dev-c++\examples\fft\fft.o(.text+0x83):fft.cpp: undefined
reference
> to `fftw_destroy_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x92):fft.cpp: undefined
reference
> to `fftw_free'
> c:\dev-c++\examples\fft\fft.o(.text+0xa1):fft.cpp: undefined
reference
> to `fftw_free'
> 
> 
> thanks in advance
> Teboho
> 
> >>> Siva Chandra <siv...@ya...> 20/10/2004 09:54:19 >>>
> 
> 
> 
> Hello,
> 
> There is a Dev-Pak now available for fftw at
> http://www.devpaks.org/ (it is listed under the
> mathematics section there).
> 
> You may try using it. But It is for an older version
> fftw-2.1.5.
> 
> HTH,
> Siva Chandra
> 
> _______________________________
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> Declare Yourself - Register online to vote today!
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Hi

Can someone please explain what this code of line means:

bind( sock, (struct sockaddr*)&socketaddress, sizeof(struct sockaddr);

I know it means that I am binding the socket with the address structure 
but what is the:
(struct sockaddr*)&socketaddress part?

Is this something like a pointer called sockaddr that holds a struct and 
then references? socketaddress?

Any help interpreting this would be great.

Many thanks,

Peter.

Those errors look would suggest that your missing a header file or something.  
I dont know what headers that fftw uses, but thats where I would
start.  Also make sure that that there is a 'using namespace <name>;'
statement, if one is required.


On Thu, 21 Oct 2004 11:31:13 +0200, Teboho Nyareli <tny...@cs...> wrote:
> Hi Siva,
> I am still getting the same errors even with fftw-2.1.5. version.
> 
> c:\dev-c++\examples\fft\fft.o(.text+0x29):fft.cpp: undefined reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x42):fft.cpp: undefined reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x58):fft.cpp: undefined reference
> to `fftw_create_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x74):fft.cpp: undefined reference
> to `fftw_one'
> c:\dev-c++\examples\fft\fft.o(.text+0x83):fft.cpp: undefined reference
> to `fftw_destroy_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x92):fft.cpp: undefined reference
> to `fftw_free'
> c:\dev-c++\examples\fft\fft.o(.text+0xa1):fft.cpp: undefined reference
> to `fftw_free'
> 
> 
> thanks in advance
> Teboho
> 
> >>> Siva Chandra <siv...@ya...> 20/10/2004 09:54:19 >>>
> 
> 
> 
> Hello,
> 
> There is a Dev-Pak now available for fftw at
> http://www.devpaks.org/ (it is listed under the
> mathematics section there).
> 
> You may try using it. But It is for an older version
> fftw-2.1.5.
> 
> HTH,
> Siva Chandra
> 
> _______________________________
> Do you Yahoo!?
> Declare Yourself - Register online to vote today!
> http://vote.yahoo.com
> 
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Hi Siva,
I am still getting the same errors even with fftw-2.1.5. version.

c:\dev-c++\examples\fft\fft.o(.text+0x29):fft.cpp: undefined reference
to `fftw_malloc'
c:\dev-c++\examples\fft\fft.o(.text+0x42):fft.cpp: undefined reference
to `fftw_malloc'
c:\dev-c++\examples\fft\fft.o(.text+0x58):fft.cpp: undefined reference
to `fftw_create_plan'
c:\dev-c++\examples\fft\fft.o(.text+0x74):fft.cpp: undefined reference
to `fftw_one'
c:\dev-c++\examples\fft\fft.o(.text+0x83):fft.cpp: undefined reference
to `fftw_destroy_plan'
c:\dev-c++\examples\fft\fft.o(.text+0x92):fft.cpp: undefined reference
to `fftw_free'
c:\dev-c++\examples\fft\fft.o(.text+0xa1):fft.cpp: undefined reference
to `fftw_free'



thanks in advance
Teboho
  

>>> Siva Chandra <siv...@ya...> 20/10/2004 09:54:19 >>>

Hello,

There is a Dev-Pak now available for fftw at
http://www.devpaks.org/ (it is listed under the
mathematics section there).

You may try using it. But It is for an older version
fftw-2.1.5. 

HTH,
Siva Chandra


		
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Declare Yourself - Register online to vote today!
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