Searched refs:I0 (Results 1 - 2 of 2) sorted by relevance

/frameworks/av/tools/resampler_tools/
H A Dfir.cpp42 static double I0(double x) { function
64 return I0(beta * sqrt(1.0 - sqr((2.0*k)/N - 1.0))) / I0(beta);
/frameworks/av/services/audioflinger/
H A DAudioResamplerFirGen.h294 static inline double I0(double x) { function in namespace:android
312 * to the Modified Bessel Functions I0(x) and I1(x)", Chalk Hill Nuclear Laboratory,
371 /* A speed optimized version of the Modified Bessel I0() which incorporates
672 const double yscale = atten * L / (I0(beta) * M_PI);
692 // y = I0(beta * sqrt(1.0 - sqr(x * xfrac))) * yscale * sg.valueAdvance() / x;

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