/*********************************************************************** Copyright (c) 2006-2011, Skype Limited. All rights reserved. Copyright (c) 2013 Parrot 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.
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/* This macro only avoids the undefined behaviour from a left shift of a negative value. It should only be used in macros that can't include
SigProc_FIX.h. In other cases, use silk_LSHIFT32(). */ #define SAFE_SHL(a,b) ((opus_int32)((opus_uint32)(a) << (b)))
/* (a32 * (opus_int32)((opus_int16)(b32))) >> 16 output have to be 32bit int */ #undef silk_SMULWB static OPUS_INLINE opus_int32 silk_SMULWB_armv5e(opus_int32 a, opus_int16 b)
{ int res;
__asm__( "#silk_SMULWB\n\t" "smulwb %0, %1, %2\n\t"
: "=r"(res)
: "r"(a), "r"(b)
); return res;
} #define silk_SMULWB(a, b) (silk_SMULWB_armv5e(a, b))
/* a32 + (b32 * (opus_int32)((opus_int16)(c32))) >> 16 output have to be 32bit int */ #undef silk_SMLAWB static OPUS_INLINE opus_int32 silk_SMLAWB_armv5e(opus_int32 a, opus_int32 b,
opus_int16 c)
{ int res;
__asm__( "#silk_SMLAWB\n\t" "smlawb %0, %1, %2, %3\n\t"
: "=r"(res)
: "r"(b), "r"(c), "r"(a)
); return res;
} #define silk_SMLAWB(a, b, c) (silk_SMLAWB_armv5e(a, b, c))
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