Memory leak in FFT function

[Burobengen]

Hi everybody

I have a memory leakage when using the FFT() funtion in the Advanced Analysis library. I have evn tried the example code given by NI:

double x[256], y[256];
int n = 256;
unsigned int UsedBlocks, UsedBytes;

Uniform (n, 17, x);
Uniform (n, 17, y);
CVIDynamicMemoryInfo ("", &UsedBlocks, &UsedBytes, DYNAMIC_MEMORY_SHOW_ALLOCATED_MEMORY_SUMMARY);
FFT (x, y, n);
CVIDynamicMemoryInfo ("", &UsedBlocks, &UsedBytes, DYNAMIC_MEMORY_SHOW_ALLOCATED_MEMORY_SUMMARY);

The UsedBlocs and UsedBytes is increased after the call to FFT. Any ideas?

Thanks in advance

-burobengen

[bilalD]

I have reproduced this as well. I'll file a bug report for this.
In the meantime, try using ReFFT if you need to perform an FFT on a signal. Or if you have CVI FDS, use the AmpPhaseSpectrum() function if all you want is the amplitude and phase of the signal. They seem to be working correctly.

[D_Ss]

I have version 7.1.1 and it still has this bug (memory leak in FFT function).  Is there any way to fix this?

Thanks,

DS

[D_Ss]

Actually, I am pretty sure the FFT function does not actually leak memory.  The bug is that memory is noted as leaked from the memory info functions.

[bilalD]

The FFT memory leak was confirmed to be fixed in CVI 8.0.