696    spx_word32_t Syy,See,Sxx,Sdd, Sff;  in speex_echo_cancellation()  local
878    See = 0;      in speex_echo_cancellation()
890       See += mdf_inner_prod(st->e+chan*N, st->e+chan*N, st->frame_size);  in speex_echo_cancellation()
895    Sff = See;  in speex_echo_cancellation()
902 …= ADD32(MULT16_32_Q15(QCONST16(.6f,15),st->Davg1), MULT16_32_Q15(QCONST16(.4f,15),SUB32(Sff,See)));  in speex_echo_cancellation()
903 …ADD32(MULT16_32_Q15(QCONST16(.85f,15),st->Davg2), MULT16_32_Q15(QCONST16(.15f,15),SUB32(Sff,See)));  in speex_echo_cancellation()
917    if (FLOAT_GT(FLOAT_MUL32U(SUB32(Sff,See),ABS32(SUB32(Sff,See))), FLOAT_MUL32U(Sff,Dbf)))  in speex_echo_cancellation()
939 …if (FLOAT_GT(FLOAT_MUL32U(NEG32(SUB32(Sff,See)),ABS32(SUB32(Sff,See))), FLOAT_MULT(VAR_BACKTRACK,F…  in speex_echo_cancellation()
958          See = Sff;  in speex_echo_cancellation()
1020    if (!(Syy>=0 && Sxx>=0 && See >= 0)  in speex_echo_cancellation()
1046    See = MAX32(See, SHR32(MULT16_16(N, 100),6));  in speex_echo_cancellation()
1081    if (tmp32 > MULT16_32_Q15(st->beta_max,See))  in speex_echo_cancellation()
1082       tmp32 = MULT16_32_Q15(st->beta_max,See);  in speex_echo_cancellation()
1083    alpha = FLOAT_DIV32(tmp32, See);  in speex_echo_cancellation()
1112       if (FLOAT_GT(bound, PSEUDOFLOAT(See)))  in speex_echo_cancellation()
1113          tmp32 = See;  in speex_echo_cancellation()
1117    if (tmp32 > SHR32(See,1))  in speex_echo_cancellation()
1118       tmp32 = SHR32(See,1);  in speex_echo_cancellation()
1119    RER = FLOAT_EXTRACT16(FLOAT_SHL(FLOAT_DIV32(tmp32,See),15));  in speex_echo_cancellation()
1121    RER = (.0001*Sxx + 3.*MULT16_32_Q15(st->leak_estimate,Syy)) / See;  in speex_echo_cancellation()
1123    if (RER < Sey*Sey/(1+See*Syy))  in speex_echo_cancellation()
1124       RER = Sey*Sey/(1+See*Syy);  in speex_echo_cancellation()
1163          if (tmp32 > SHR32(See,2))  in speex_echo_cancellation()
1164             tmp32 = SHR32(See,2);  in speex_echo_cancellation()
1166          if (tmp32 > .25*See)  in speex_echo_cancellation()
1167             tmp32 = .25*See;  in speex_echo_cancellation()
1169          adapt_rate = FLOAT_EXTRACT16(FLOAT_SHL(FLOAT_DIV32(tmp32, See),15));  in speex_echo_cancellation()