[LAD] fftw_complex and C++11

Aurélien Leblond blablack at gmail.com
Sat Jan 3 20:18:25 UTC 2015

Hi all,

I'm porting the FFT Vocoder from AMS to ams.lv2.
The FFT Vocoder is using fftw_complex, and I can compile my code if I use
-std=c99 but not if I use -std=c++11

I get error like:

error: incompatible types in assignment of ‘float’ to ‘fftw_complex {aka
double [2]}’
   modinforward[l2] = modbuf[l2] * window[l2];

error: cannot convert ‘double*’ to ‘__complex__ double’ for argument ‘1’ to
‘double creal(__complex__ double)’
   p(p_modulatorfft)[l2] = logf(fabs (creal (modoutforward[l2])) + 1.0);

error: invalid array assignment
   modinbackward[ lclfrq ] = modoutforward [l2];

carrinforward, carroutforward, carrinbackward,
carroutbackward, modinforward, modoutforward, modinbackward, modoutbackward
are pointers to fftw_complex.

Would you guys have any idea why it doesn't compile in the c++11 standard?
>From my research I saw there were some changes between c99 and c11 with
complex numbers, but I can't figure out how to bring the code to C++11.

Thanks in advance for the help,

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