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diff --git a/src/opus-1.0.2/silk/fixed/residual_energy16_FIX.c b/src/opus-1.0.2/silk/fixed/residual_energy16_FIX.c
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--- a/src/opus-1.0.2/silk/fixed/residual_energy16_FIX.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/***********************************************************************
-Copyright (c) 2006-2011, Skype Limited. All rights reserved.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-- Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
-- Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-- Neither the name of Internet Society, IETF or IETF Trust, nor the
-names of specific contributors, may be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-***********************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "main_FIX.h"
-
-/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */
-opus_int32 silk_residual_energy16_covar_FIX(
- const opus_int16 *c, /* I Prediction vector */
- const opus_int32 *wXX, /* I Correlation matrix */
- const opus_int32 *wXx, /* I Correlation vector */
- opus_int32 wxx, /* I Signal energy */
- opus_int D, /* I Dimension */
- opus_int cQ /* I Q value for c vector 0 - 15 */
-)
-{
- opus_int i, j, lshifts, Qxtra;
- opus_int32 c_max, w_max, tmp, tmp2, nrg;
- opus_int cn[ MAX_MATRIX_SIZE ];
- const opus_int32 *pRow;
-
- /* Safety checks */
- silk_assert( D >= 0 );
- silk_assert( D <= 16 );
- silk_assert( cQ > 0 );
- silk_assert( cQ < 16 );
-
- lshifts = 16 - cQ;
- Qxtra = lshifts;
-
- c_max = 0;
- for( i = 0; i < D; i++ ) {
- c_max = silk_max_32( c_max, silk_abs( (opus_int32)c[ i ] ) );
- }
- Qxtra = silk_min_int( Qxtra, silk_CLZ32( c_max ) - 17 );
-
- w_max = silk_max_32( wXX[ 0 ], wXX[ D * D - 1 ] );
- Qxtra = silk_min_int( Qxtra, silk_CLZ32( silk_MUL( D, silk_RSHIFT( silk_SMULWB( w_max, c_max ), 4 ) ) ) - 5 );
- Qxtra = silk_max_int( Qxtra, 0 );
- for( i = 0; i < D; i++ ) {
- cn[ i ] = silk_LSHIFT( ( opus_int )c[ i ], Qxtra );
- silk_assert( silk_abs(cn[i]) <= ( silk_int16_MAX + 1 ) ); /* Check that silk_SMLAWB can be used */
- }
- lshifts -= Qxtra;
-
- /* Compute wxx - 2 * wXx * c */
- tmp = 0;
- for( i = 0; i < D; i++ ) {
- tmp = silk_SMLAWB( tmp, wXx[ i ], cn[ i ] );
- }
- nrg = silk_RSHIFT( wxx, 1 + lshifts ) - tmp; /* Q: -lshifts - 1 */
-
- /* Add c' * wXX * c, assuming wXX is symmetric */
- tmp2 = 0;
- for( i = 0; i < D; i++ ) {
- tmp = 0;
- pRow = &wXX[ i * D ];
- for( j = i + 1; j < D; j++ ) {
- tmp = silk_SMLAWB( tmp, pRow[ j ], cn[ j ] );
- }
- tmp = silk_SMLAWB( tmp, silk_RSHIFT( pRow[ i ], 1 ), cn[ i ] );
- tmp2 = silk_SMLAWB( tmp2, tmp, cn[ i ] );
- }
- nrg = silk_ADD_LSHIFT32( nrg, tmp2, lshifts ); /* Q: -lshifts - 1 */
-
- /* Keep one bit free always, because we add them for LSF interpolation */
- if( nrg < 1 ) {
- nrg = 1;
- } else if( nrg > silk_RSHIFT( silk_int32_MAX, lshifts + 2 ) ) {
- nrg = silk_int32_MAX >> 1;
- } else {
- nrg = silk_LSHIFT( nrg, lshifts + 1 ); /* Q0 */
- }
- return nrg;
-
-}