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    Searched refs:log2Length (Results 1 - 2 of 2) sorted by null

  /external/srec/srec/include/
sp_fft.h 234 log2Length -- the power-of-two length of the complex FFT
239 srfft* new_srfft(unsigned log2Length);
261 and must be equal to 2**(log2Length + 1)
281 and must be equal to 2**(log2Length + 1)
  /external/srec/srec/cfront/
sp_fft.c 655 ** FFT will grow data log2Length. In order to avoid data overflow,
658 ** scale = 8*sizeof(fftdata) - data_bits() - log2Length
698 ** fixed data = fftdata * 2**(8*sizeof(fftdata) - DATA_BITS - log2Length)
702 ** fixed magnitude = fftdata magnitude * 2**(2*(32 - 16 - log2Length)) - 2**32)
703 ** = fftdata magnitude * 2**(-2*log2Length)
705 ** to get the fixed magnitude = fftdata magnitude * 2**(-log2Length-1)
712 ** Funthermore, even and odd log2Length-1 must be handled differently.
813 unsigned int log2Length, length;
815 log2Length = 0;
820 log2Length++
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