1885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/*********************************************************************** 2885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCopyright (c) 2006-2011, Skype Limited. All rights reserved. 3885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgRedistribution and use in source and binary forms, with or without 4885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgmodification, are permitted provided that the following conditions 5885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgare met: 6885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org- Redistributions of source code must retain the above copyright notice, 7885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgthis list of conditions and the following disclaimer. 8885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org- Redistributions in binary form must reproduce the above copyright 9885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgnotice, this list of conditions and the following disclaimer in the 10885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgdocumentation and/or other materials provided with the distribution. 11e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org- Neither the name of Internet Society, IETF or IETF Trust, nor the 12885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgnames of specific contributors, may be used to endorse or promote 13885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgproducts derived from this software without specific prior written 14885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgpermission. 15e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.orgTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgAND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgLIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgINTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgPOSSIBILITY OF SUCH DAMAGE. 26885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org***********************************************************************/ 27885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 28885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/*! \file silk_Inlines.h 293c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.com * \brief silk_Inlines.h defines OPUS_INLINE signal processing functions. 30885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org */ 31885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 32885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef SILK_FIX_INLINES_H 33885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define SILK_FIX_INLINES_H 34885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 35885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef __cplusplus 36885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgextern "C" 37885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 38885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 39885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 40885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* count leading zeros of opus_int64 */ 413c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE opus_int32 silk_CLZ64( opus_int64 in ) 42885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 43885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 in_upper; 44885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 45885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org in_upper = (opus_int32)silk_RSHIFT64(in, 32); 46885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (in_upper == 0) { 47885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Search in the lower 32 bits */ 48885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return 32 + silk_CLZ32( (opus_int32) in ); 49885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 50885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Search in the upper 32 bits */ 51885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_CLZ32( in_upper ); 52885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 53885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 54885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 55885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* get number of leading zeros and fractional part (the bits right after the leading one */ 563c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE void silk_CLZ_FRAC( 57885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 in, /* I input */ 58885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 *lz, /* O number of leading zeros */ 59885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 *frac_Q7 /* O the 7 bits right after the leading one */ 60885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) 61885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 62885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 lzeros = silk_CLZ32(in); 63885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 64885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org * lz = lzeros; 65885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org * frac_Q7 = silk_ROR32(in, 24 - lzeros) & 0x7f; 66885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 67885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 68885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Approximation of square root */ 69885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Accuracy: < +/- 10% for output values > 15 */ 70885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* < +/- 2.5% for output values > 120 */ 713c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE opus_int32 silk_SQRT_APPROX( opus_int32 x ) 72885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 73885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 y, lz, frac_Q7; 74885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 75885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( x <= 0 ) { 76885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return 0; 77885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 78885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 79885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_CLZ_FRAC(x, &lz, &frac_Q7); 80885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 81885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( lz & 1 ) { 82885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org y = 32768; 83885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 84885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org y = 46214; /* 46214 = sqrt(2) * 32768 */ 85885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 86885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 87885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* get scaling right */ 88885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org y >>= silk_RSHIFT(lz, 1); 89885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 90885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* increment using fractional part of input */ 91885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org y = silk_SMLAWB(y, y, silk_SMULBB(213, frac_Q7)); 92885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 93885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return y; 94885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 95885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 96885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Divide two int32 values and return result as int32 in a given Q-domain */ 973c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE opus_int32 silk_DIV32_varQ( /* O returns a good approximation of "(a32 << Qres) / b32" */ 98885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int32 a32, /* I numerator (Q0) */ 99885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int32 b32, /* I denominator (Q0) */ 100885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int Qres /* I Q-domain of result (>= 0) */ 101885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) 102885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 103885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int a_headrm, b_headrm, lshift; 104885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 b32_inv, a32_nrm, b32_nrm, result; 105885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 106885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( b32 != 0 ); 107885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( Qres >= 0 ); 108885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 109885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute number of bits head room and normalize inputs */ 110885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org a_headrm = silk_CLZ32( silk_abs(a32) ) - 1; 111885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org a32_nrm = silk_LSHIFT(a32, a_headrm); /* Q: a_headrm */ 112885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_headrm = silk_CLZ32( silk_abs(b32) ) - 1; 113885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b32_nrm = silk_LSHIFT(b32, b_headrm); /* Q: b_headrm */ 114885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 115885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Inverse of b32, with 14 bits of precision */ 116885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b32_inv = silk_DIV32_16( silk_int32_MAX >> 2, silk_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */ 117885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 118885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* First approximation */ 119885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org result = silk_SMULWB(a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */ 120885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 121885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute residual by subtracting product of denominator and first approximation */ 122885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* It's OK to overflow because the final value of a32_nrm should always be small */ 123885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org a32_nrm = silk_SUB32_ovflw(a32_nrm, silk_LSHIFT_ovflw( silk_SMMUL(b32_nrm, result), 3 )); /* Q: a_headrm */ 124885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 125885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Refinement */ 126885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org result = silk_SMLAWB(result, a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */ 127885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 128885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert to Qres domain */ 129885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lshift = 29 + a_headrm - b_headrm - Qres; 130885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( lshift < 0 ) { 131885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_LSHIFT_SAT32(result, -lshift); 132885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 133885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( lshift < 32){ 134885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_RSHIFT(result, lshift); 135885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 136885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Avoid undefined result */ 137885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return 0; 138885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 139885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 140885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 141885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 142885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Invert int32 value and return result as int32 in a given Q-domain */ 1433c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE opus_int32 silk_INVERSE32_varQ( /* O returns a good approximation of "(1 << Qres) / b32" */ 144885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int32 b32, /* I denominator (Q0) */ 145885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int Qres /* I Q-domain of result (> 0) */ 146885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) 147885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 148885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int b_headrm, lshift; 149885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 b32_inv, b32_nrm, err_Q32, result; 150885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 151885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( b32 != 0 ); 152885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( Qres > 0 ); 153885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 154885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute number of bits head room and normalize input */ 155885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_headrm = silk_CLZ32( silk_abs(b32) ) - 1; 156885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b32_nrm = silk_LSHIFT(b32, b_headrm); /* Q: b_headrm */ 157885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 158885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Inverse of b32, with 14 bits of precision */ 159885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b32_inv = silk_DIV32_16( silk_int32_MAX >> 2, silk_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */ 160885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 161885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* First approximation */ 162885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org result = silk_LSHIFT(b32_inv, 16); /* Q: 61 - b_headrm */ 163885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 164885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute residual by subtracting product of denominator and first approximation from one */ 165885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org err_Q32 = silk_LSHIFT( ((opus_int32)1<<29) - silk_SMULWB(b32_nrm, b32_inv), 3 ); /* Q32 */ 166885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 167885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Refinement */ 168885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org result = silk_SMLAWW(result, err_Q32, b32_inv); /* Q: 61 - b_headrm */ 169885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 170885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert to Qres domain */ 171885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lshift = 61 - b_headrm - Qres; 172885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( lshift <= 0 ) { 173885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_LSHIFT_SAT32(result, -lshift); 174885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 175885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( lshift < 32){ 176885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_RSHIFT(result, lshift); 177885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org }else{ 178885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Avoid undefined result */ 179885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return 0; 180885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 181885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 182885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 183885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 184885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef __cplusplus 185885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 186885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 187885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 188885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* SILK_FIX_INLINES_H */ 189