1 files changed, 0 insertions, 73 deletions
diff --git a/drivers/opus/silk/sigm_Q15.c b/drivers/opus/silk/sigm_Q15.c
deleted file mode 100644
index 3171d15f4a..0000000000
--- a/drivers/opus/silk/sigm_Q15.c
+++ /dev/null
@@ -1,73 +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.
-***********************************************************************/
-#include "opus/opus_config.h"
-
-/* Approximate sigmoid function */
-
-#include "opus/silk/SigProc_FIX.h"
-
-/* fprintf(1, '%d, ', round(1024 * ([1 ./ (1 + exp(-(1:5))), 1] - 1 ./ (1 + exp(-(0:5)))))); */
-static const opus_int32 sigm_LUT_slope_Q10[ 6 ] = {
-    237, 153, 73, 30, 12, 7
-};
-/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp(-(0:5))))); */
-static const opus_int32 sigm_LUT_pos_Q15[ 6 ] = {
-    16384, 23955, 28861, 31213, 32178, 32548
-};
-/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp((0:5))))); */
-static const opus_int32 sigm_LUT_neg_Q15[ 6 ] = {
-    16384, 8812, 3906, 1554, 589, 219
-};
-
-opus_int silk_sigm_Q15(
-    opus_int                    in_Q5               /* I                                                                */
-)
-{
-    opus_int ind;
-
-    if( in_Q5 < 0 ) {
-        /* Negative input */
-        in_Q5 = -in_Q5;
-        if( in_Q5 >= 6 * 32 ) {
-            return 0;        /* Clip */
-        } else {
-            /* Linear interpolation of look up table */
-            ind = silk_RSHIFT( in_Q5, 5 );
-            return( sigm_LUT_neg_Q15[ ind ] - silk_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) );
-        }
-    } else {
-        /* Positive input */
-        if( in_Q5 >= 6 * 32 ) {
-            return 32767;        /* clip */
-        } else {
-            /* Linear interpolation of look up table */
-            ind = silk_RSHIFT( in_Q5, 5 );
-            return( sigm_LUT_pos_Q15[ ind ] + silk_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) );
-        }
-    }
-}
-