void ff_eval_coefs(int *coefs, const int *refl)

{

    int buffer[LPC_ORDER];

    int *b1 = buffer;

    int *b2 = coefs;

    int i, j;



    for (i=0; i < LPC_ORDER; i++) {

        b1[i] = refl[i] * 16;



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

            b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];



        FFSWAP(int *, b1, b2);

    }



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

        coefs[i] >>= 4;

}
