static int eval_refl(int *refl, const int16_t *coefs, RA144Context *ractx)

{

    int b, i, j;

    int buffer1[10];

    int buffer2[10];

    int *bp1 = buffer1;

    int *bp2 = buffer2;



    for (i=0; i < 10; i++)

        buffer2[i] = coefs[i];



    refl[9] = bp2[9];



    if ((unsigned) bp2[9] + 0x1000 > 0x1fff) {

        av_log(ractx, AV_LOG_ERROR, "Overflow. Broken sample?\n");

        return 1;

    }



    for (i=8; i >= 0; i--) {

        b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);



        if (!b)

            b = -2;



        for (j=0; j <= i; j++)

            bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * (0x1000000 / b)) >> 12;



        refl[i] = bp1[i];



        if ((unsigned) bp1[i] + 0x1000 > 0x1fff)

            return 1;



        FFSWAP(int *, bp1, bp2);

    }

    return 0;

}
