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diff --git a/lib/rbcodec/codecs/libopus/celt/tests/test_unit_mathops.c b/lib/rbcodec/codecs/libopus/celt/tests/test_unit_mathops.c
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+++ b/lib/rbcodec/codecs/libopus/celt/tests/test_unit_mathops.c
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+/* Copyright (c) 2008-2011 Xiph.Org Foundation, Mozilla Corporation,
+ Gregory Maxwell
+ Written by Jean-Marc Valin, Gregory Maxwell, and Timothy B. Terriberry */
+/*
+ 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.
+
+ 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
+
+#ifndef CUSTOM_MODES
+#define CUSTOM_MODES
+#endif
+
+#include <stdio.h>
+#include <math.h>
+#include "mathops.h"
+#include "bands.h"
+
+#ifdef FIXED_POINT
+#define WORD "%d"
+#else
+#define WORD "%f"
+#endif
+
+int ret = 0;
+
+void testdiv(void)
+{
+ opus_int32 i;
+ for (i=1;i<=327670;i++)
+ {
+ double prod;
+ opus_val32 val;
+ val = celt_rcp(i);
+#ifdef FIXED_POINT
+ prod = (1./32768./65526.)*val*i;
+#else
+ prod = val*i;
+#endif
+ if (fabs(prod-1) > .00025)
+ {
+ fprintf (stderr, "div failed: 1/%d="WORD" (product = %f)\n", i, val, prod);
+ ret = 1;
+ }
+ }
+}
+
+void testsqrt(void)
+{
+ opus_int32 i;
+ for (i=1;i<=1000000000;i++)
+ {
+ double ratio;
+ opus_val16 val;
+ val = celt_sqrt(i);
+ ratio = val/sqrt(i);
+ if (fabs(ratio - 1) > .0005 && fabs(val-sqrt(i)) > 2)
+ {
+ fprintf (stderr, "sqrt failed: sqrt(%d)="WORD" (ratio = %f)\n", i, val, ratio);
+ ret = 1;
+ }
+ i+= i>>10;
+ }
+}
+
+void testbitexactcos(void)
+{
+ int i;
+ opus_int32 min_d,max_d,last,chk;
+ chk=max_d=0;
+ last=min_d=32767;
+ for(i=64;i<=16320;i++)
+ {
+ opus_int32 d;
+ opus_int32 q=bitexact_cos(i);
+ chk ^= q*i;
+ d = last - q;
+ if (d>max_d)max_d=d;
+ if (d<min_d)min_d=d;
+ last = q;
+ }
+ if ((chk!=89408644)||(max_d!=5)||(min_d!=0)||(bitexact_cos(64)!=32767)||
+ (bitexact_cos(16320)!=200)||(bitexact_cos(8192)!=23171))
+ {
+ fprintf (stderr, "bitexact_cos failed\n");
+ ret = 1;
+ }
+}
+
+void testbitexactlog2tan(void)
+{
+ int i,fail;
+ opus_int32 min_d,max_d,last,chk;
+ fail=chk=max_d=0;
+ last=min_d=15059;
+ for(i=64;i<8193;i++)
+ {
+ opus_int32 d;
+ opus_int32 mid=bitexact_cos(i);
+ opus_int32 side=bitexact_cos(16384-i);
+ opus_int32 q=bitexact_log2tan(mid,side);
+ chk ^= q*i;
+ d = last - q;
+ if (q!=-1*bitexact_log2tan(side,mid))
+ fail = 1;
+ if (d>max_d)max_d=d;
+ if (d<min_d)min_d=d;
+ last = q;
+ }
+ if ((chk!=15821257)||(max_d!=61)||(min_d!=-2)||fail||
+ (bitexact_log2tan(32767,200)!=15059)||(bitexact_log2tan(30274,12540)!=2611)||
+ (bitexact_log2tan(23171,23171)!=0))
+ {
+ fprintf (stderr, "bitexact_log2tan failed\n");
+ ret = 1;
+ }
+}
+
+#ifndef FIXED_POINT
+void testlog2(void)
+{
+ float x;
+ for (x=0.001;x<1677700.0;x+=(x/8.0))
+ {
+ float error = fabs((1.442695040888963387*log(x))-celt_log2(x));
+ if (error>0.0009)
+ {
+ fprintf (stderr, "celt_log2 failed: fabs((1.442695040888963387*log(x))-celt_log2(x))>0.001 (x = %f, error = %f)\n", x,error);
+ ret = 1;
+ }
+ }
+}
+
+void testexp2(void)
+{
+ float x;
+ for (x=-11.0;x<24.0;x+=0.0007)
+ {
+ float error = fabs(x-(1.442695040888963387*log(celt_exp2(x))));
+ if (error>0.0002)
+ {
+ fprintf (stderr, "celt_exp2 failed: fabs(x-(1.442695040888963387*log(celt_exp2(x))))>0.0005 (x = %f, error = %f)\n", x,error);
+ ret = 1;
+ }
+ }
+}
+
+void testexp2log2(void)
+{
+ float x;
+ for (x=-11.0;x<24.0;x+=0.0007)
+ {
+ float error = fabs(x-(celt_log2(celt_exp2(x))));
+ if (error>0.001)
+ {
+ fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_log2(celt_exp2(x))))>0.001 (x = %f, error = %f)\n", x,error);
+ ret = 1;
+ }
+ }
+}
+#else
+void testlog2(void)
+{
+ opus_val32 x;
+ for (x=8;x<1073741824;x+=(x>>3))
+ {
+ float error = fabs((1.442695040888963387*log(x/16384.0))-celt_log2(x)/1024.0);
+ if (error>0.003)
+ {
+ fprintf (stderr, "celt_log2 failed: x = %ld, error = %f\n", (long)x,error);
+ ret = 1;
+ }
+ }
+}
+
+void testexp2(void)
+{
+ opus_val16 x;
+ for (x=-32768;x<15360;x++)
+ {
+ float error1 = fabs(x/1024.0-(1.442695040888963387*log(celt_exp2(x)/65536.0)));
+ float error2 = fabs(exp(0.6931471805599453094*x/1024.0)-celt_exp2(x)/65536.0);
+ if (error1>0.0002&&error2>0.00004)
+ {
+ fprintf (stderr, "celt_exp2 failed: x = "WORD", error1 = %f, error2 = %f\n", x,error1,error2);
+ ret = 1;
+ }
+ }
+}
+
+void testexp2log2(void)
+{
+ opus_val32 x;
+ for (x=8;x<65536;x+=(x>>3))
+ {
+ float error = fabs(x-0.25*celt_exp2(celt_log2(x)))/16384;
+ if (error>0.004)
+ {
+ fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_exp2(celt_log2(x))))>0.001 (x = %ld, error = %f)\n", (long)x,error);
+ ret = 1;
+ }
+ }
+}
+
+void testilog2(void)
+{
+ opus_val32 x;
+ for (x=1;x<=268435455;x+=127)
+ {
+ opus_val32 lg;
+ opus_val32 y;
+
+ lg = celt_ilog2(x);
+ if (lg<0 || lg>=31)
+ {
+ printf("celt_ilog2 failed: 0<=celt_ilog2(x)<31 (x = %d, celt_ilog2(x) = %d)\n",x,lg);
+ ret = 1;
+ }
+ y = 1<<lg;
+
+ if (x<y || (x>>1)>=y)
+ {
+ printf("celt_ilog2 failed: 2**celt_ilog2(x)<=x<2**(celt_ilog2(x)+1) (x = %d, 2**celt_ilog2(x) = %d)\n",x,y);
+ ret = 1;
+ }
+ }
+}
+#endif
+
+int main(void)
+{
+ testbitexactcos();
+ testbitexactlog2tan();
+ testdiv();
+ testsqrt();
+ testlog2();
+ testexp2();
+ testexp2log2();
+#ifdef FIXED_POINT
+ testilog2();
+#endif
+ return ret;
+}