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static double bessel ( double  x  )  [static]

0th order modified bessel function of the first kind.

Definition at line 76 of file resample2.c.

Referenced by av_build_filter().

    double v=1;
    double t=1;
    int i;

    x= x*x/4;
    for(i=1; i<50; i++){
        t *= x/(i*i);
        v += t;
    return v;

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