opus/silk/MacroDebug.h

/***********************************************************************
Copyright (c) 2006-2012 IETF Trust and Skype Limited. All rights reserved.

This file is extracted from RFC6716. Please see that RFC for additional
information.

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
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names of specific contributors, may be used to endorse or promote
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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
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***********************************************************************/

#ifndef MACRO_DEBUG_H
#define MACRO_DEBUG_H

/* Redefine macro functions with extensive assertion in DEBUG mode.
   As functions can't be undefined, this file can't work with SigProcFIX_MacroCount.h */

#if 0 && defined (_DEBUG) && !defined (silk_MACRO_COUNT)

#undef silk_ADD16
static inline opus_int16 silk_ADD16(opus_int16 a, opus_int16 b){
    opus_int16 ret;

    ret = a + b;
    silk_assert( ret == silk_ADD_SAT16( a, b ));
    return ret;
}

#undef silk_ADD32
static inline opus_int32 silk_ADD32(opus_int32 a, opus_int32 b){
    opus_int32 ret;

    ret = a + b;
    silk_assert( ret == silk_ADD_SAT32( a, b ));
    return ret;
}

#undef silk_ADD64
static inline opus_int64 silk_ADD64(opus_int64 a, opus_int64 b){
    opus_int64 ret;

    ret = a + b;
    silk_assert( ret == silk_ADD_SAT64( a, b ));
    return ret;
}

#undef silk_SUB16
static inline opus_int16 silk_SUB16(opus_int16 a, opus_int16 b){
    opus_int16 ret;

    ret = a - b;
    silk_assert( ret == silk_SUB_SAT16( a, b ));
    return ret;
}

#undef silk_SUB32
static inline opus_int32 silk_SUB32(opus_int32 a, opus_int32 b){
    opus_int32 ret;

    ret = a - b;
    silk_assert( ret == silk_SUB_SAT32( a, b ));
    return ret;
}

#undef silk_SUB64
static inline opus_int64 silk_SUB64(opus_int64 a, opus_int64 b){
    opus_int64 ret;

    ret = a - b;
    silk_assert( ret == silk_SUB_SAT64( a, b ));
    return ret;
}

#undef silk_ADD_SAT16
static inline opus_int16 silk_ADD_SAT16( opus_int16 a16, opus_int16 b16 ) {
    opus_int16 res;
    res = (opus_int16)silk_SAT16( silk_ADD32( (opus_int32)(a16), (b16) ) );
    silk_assert( res == silk_SAT16( (opus_int32)a16 + (opus_int32)b16 ) );
    return res;
}

#undef silk_ADD_SAT32
static inline opus_int32 silk_ADD_SAT32(opus_int32 a32, opus_int32 b32){
    opus_int32 res;
    res =    ((((a32) + (b32)) & 0x80000000) == 0 ?                                   \
            ((((a32) & (b32)) & 0x80000000) != 0 ? silk_int32_MIN : (a32)+(b32)) :    \
            ((((a32) | (b32)) & 0x80000000) == 0 ? silk_int32_MAX : (a32)+(b32)) );
    silk_assert( res == silk_SAT32( (opus_int64)a32 + (opus_int64)b32 ) );
    return res;
}

#undef silk_ADD_SAT64
static inline opus_int64 silk_ADD_SAT64( opus_int64 a64, opus_int64 b64 ) {
    opus_int64 res;
    res =    ((((a64) + (b64)) & 0x8000000000000000LL) == 0 ?                                   \
            ((((a64) & (b64)) & 0x8000000000000000LL) != 0 ? silk_int64_MIN : (a64)+(b64)) :    \
            ((((a64) | (b64)) & 0x8000000000000000LL) == 0 ? silk_int64_MAX : (a64)+(b64)) );
    if( res != a64 + b64 ) {
        /* Check that we saturated to the correct extreme value */
        silk_assert( ( res == silk_int64_MAX && ( ( a64 >> 1 ) + ( b64 >> 1 ) > ( silk_int64_MAX >> 3 ) ) ) ||
                    ( res == silk_int64_MIN && ( ( a64 >> 1 ) + ( b64 >> 1 ) < ( silk_int64_MIN >> 3 ) ) ) );
    } else {
        /* Saturation not necessary */
        silk_assert( res == a64 + b64 );
    }
    return res;
}

#undef silk_SUB_SAT16
static inline opus_int16 silk_SUB_SAT16( opus_int16 a16, opus_int16 b16 ) {
    opus_int16 res;
    res = (opus_int16)silk_SAT16( silk_SUB32( (opus_int32)(a16), (b16) ) );
    silk_assert( res == silk_SAT16( (opus_int32)a16 - (opus_int32)b16 ) );
    return res;
}

#undef silk_SUB_SAT32
static inline opus_int32 silk_SUB_SAT32( opus_int32 a32, opus_int32 b32 ) {
    opus_int32 res;
    res =     ((((a32)-(b32)) & 0x80000000) == 0 ?                                           \
            (( (a32) & ((b32)^0x80000000) & 0x80000000) ? silk_int32_MIN : (a32)-(b32)) :    \
            ((((a32)^0x80000000) & (b32)  & 0x80000000) ? silk_int32_MAX : (a32)-(b32)) );
    silk_assert( res == silk_SAT32( (opus_int64)a32 - (opus_int64)b32 ) );
    return res;
}

#undef silk_SUB_SAT64
static inline opus_int64 silk_SUB_SAT64( opus_int64 a64, opus_int64 b64 ) {
    opus_int64 res;
    res =    ((((a64)-(b64)) & 0x8000000000000000LL) == 0 ?                                                      \
            (( (a64) & ((b64)^0x8000000000000000LL) & 0x8000000000000000LL) ? silk_int64_MIN : (a64)-(b64)) :    \
            ((((a64)^0x8000000000000000LL) & (b64)  & 0x8000000000000000LL) ? silk_int64_MAX : (a64)-(b64)) );

    if( res != a64 - b64 ) {
        /* Check that we saturated to the correct extreme value */
        silk_assert( ( res == silk_int64_MAX && ( ( a64 >> 1 ) + ( b64 >> 1 ) > ( silk_int64_MAX >> 3 ) ) ) ||
                    ( res == silk_int64_MIN && ( ( a64 >> 1 ) + ( b64 >> 1 ) < ( silk_int64_MIN >> 3 ) ) ) );
    } else {
        /* Saturation not necessary */
        silk_assert( res == a64 - b64 );
    }
    return res;
}

#undef silk_MUL
static inline opus_int32 silk_MUL(opus_int32 a32, opus_int32 b32){
    opus_int32 ret;
    opus_int64 ret64;
    ret = a32 * b32;
    ret64 = (opus_int64)a32 * (opus_int64)b32;
    silk_assert((opus_int64)ret == ret64 );        /* Check output overflow */
    return ret;
}

#undef silk_MUL_uint
static inline opus_uint32 silk_MUL_uint(opus_uint32 a32, opus_uint32 b32){
    opus_uint32 ret;
    ret = a32 * b32;
    silk_assert((opus_uint64)ret == (opus_uint64)a32 * (opus_uint64)b32);        /* Check output overflow */
    return ret;
}

#undef silk_MLA
static inline opus_int32 silk_MLA(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = a32 + b32 * c32;
    silk_assert((opus_int64)ret == (opus_int64)a32 + (opus_int64)b32 * (opus_int64)c32);    /* Check output overflow */
    return ret;
}

#undef silk_MLA_uint
static inline opus_int32 silk_MLA_uint(opus_uint32 a32, opus_uint32 b32, opus_uint32 c32){
    opus_uint32 ret;
    ret = a32 + b32 * c32;
    silk_assert((opus_int64)ret == (opus_int64)a32 + (opus_int64)b32 * (opus_int64)c32);    /* Check output overflow */
    return ret;
}

#undef silk_SMULWB
static inline opus_int32 silk_SMULWB(opus_int32 a32, opus_int32 b32){
    opus_int32 ret;
    ret = (a32 >> 16) * (opus_int32)((opus_int16)b32) + (((a32 & 0x0000FFFF) * (opus_int32)((opus_int16)b32)) >> 16);
    silk_assert((opus_int64)ret == ((opus_int64)a32 * (opus_int16)b32) >> 16);
    return ret;
}

#undef silk_SMLAWB
static inline opus_int32 silk_SMLAWB(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = silk_ADD32( a32, silk_SMULWB( b32, c32 ) );
    silk_assert(silk_ADD32( a32, silk_SMULWB( b32, c32 ) ) == silk_ADD_SAT32( a32, silk_SMULWB( b32, c32 ) ));
    return ret;
}

#undef silk_SMULWT
static inline opus_int32 silk_SMULWT(opus_int32 a32, opus_int32 b32){
    opus_int32 ret;
    ret = (a32 >> 16) * (b32 >> 16) + (((a32 & 0x0000FFFF) * (b32 >> 16)) >> 16);
    silk_assert((opus_int64)ret == ((opus_int64)a32 * (b32 >> 16)) >> 16);
    return ret;
}

#undef silk_SMLAWT
static inline opus_int32 silk_SMLAWT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = a32 + ((b32 >> 16) * (c32 >> 16)) + (((b32 & 0x0000FFFF) * ((c32 >> 16)) >> 16));
    silk_assert((opus_int64)ret == (opus_int64)a32 + (((opus_int64)b32 * (c32 >> 16)) >> 16));
    return ret;
}

#undef silk_SMULL
static inline opus_int64 silk_SMULL(opus_int64 a64, opus_int64 b64){
    opus_int64 ret64;
    ret64 = a64 * b64;
    if( b64 != 0 ) {
        silk_assert( a64 == (ret64 / b64) );
    } else if( a64 != 0 ) {
        silk_assert( b64 == (ret64 / a64) );
    }
    return ret64;
}

/* no checking needed for silk_SMULBB */
#undef silk_SMLABB
static inline opus_int32 silk_SMLABB(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = a32 + (opus_int32)((opus_int16)b32) * (opus_int32)((opus_int16)c32);
    silk_assert((opus_int64)ret == (opus_int64)a32 + (opus_int64)b32 * (opus_int16)c32);
    return ret;
}

/* no checking needed for silk_SMULBT */
#undef silk_SMLABT
static inline opus_int32 silk_SMLABT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = a32 + ((opus_int32)((opus_int16)b32)) * (c32 >> 16);
    silk_assert((opus_int64)ret == (opus_int64)a32 + (opus_int64)b32 * (c32 >> 16));
    return ret;
}

/* no checking needed for silk_SMULTT */
#undef silk_SMLATT
static inline opus_int32 silk_SMLATT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret;
    ret = a32 + (b32 >> 16) * (c32 >> 16);
    silk_assert((opus_int64)ret == (opus_int64)a32 + (b32 >> 16) * (c32 >> 16));
    return ret;
}

#undef silk_SMULWW
static inline opus_int32 silk_SMULWW(opus_int32 a32, opus_int32 b32){
    opus_int32 ret, tmp1, tmp2;
    opus_int64 ret64;

    ret  = silk_SMULWB( a32, b32 );
    tmp1 = silk_RSHIFT_ROUND( b32, 16 );
    tmp2 = silk_MUL( a32, tmp1 );

    silk_assert( (opus_int64)tmp2 == (opus_int64) a32 * (opus_int64) tmp1 );

    tmp1 = ret;
    ret  = silk_ADD32( tmp1, tmp2 );
    silk_assert( silk_ADD32( tmp1, tmp2 ) == silk_ADD_SAT32( tmp1, tmp2 ) );

    ret64 = silk_RSHIFT64( silk_SMULL( a32, b32 ), 16 );
    silk_assert( (opus_int64)ret == ret64 );

    return ret;
}

#undef silk_SMLAWW
static inline opus_int32 silk_SMLAWW(opus_int32 a32, opus_int32 b32, opus_int32 c32){
    opus_int32 ret, tmp;

    tmp = silk_SMULWW( b32, c32 );
    ret = silk_ADD32( a32, tmp );
    silk_assert( ret == silk_ADD_SAT32( a32, tmp ) );
    return ret;
}

/* Multiply-accumulate macros that allow overflow in the addition (ie, no asserts in debug mode) */
#undef  silk_MLA_ovflw
#define silk_MLA_ovflw(a32, b32, c32)    ((a32) + ((b32) * (c32)))
#undef  silk_SMLABB_ovflw
#define silk_SMLABB_ovflw(a32, b32, c32)    ((a32) + ((opus_int32)((opus_int16)(b32))) * (opus_int32)((opus_int16)(c32)))

/* no checking needed for silk_SMULL
   no checking needed for silk_SMLAL
   no checking needed for silk_SMLALBB
   no checking needed for SigProcFIX_CLZ16
   no checking needed for SigProcFIX_CLZ32*/

#undef silk_DIV32
static inline opus_int32 silk_DIV32(opus_int32 a32, opus_int32 b32){
    silk_assert( b32 != 0 );
    return a32 / b32;
}

#undef silk_DIV32_16
static inline opus_int32 silk_DIV32_16(opus_int32 a32, opus_int32 b32){
    silk_assert( b32 != 0 );
    silk_assert( b32 <= silk_int16_MAX );
    silk_assert( b32 >= silk_int16_MIN );
    return a32 / b32;
}

/* no checking needed for silk_SAT8
   no checking needed for silk_SAT16
   no checking needed for silk_SAT32
   no checking needed for silk_POS_SAT32
   no checking needed for silk_ADD_POS_SAT8
   no checking needed for silk_ADD_POS_SAT16
   no checking needed for silk_ADD_POS_SAT32
   no checking needed for silk_ADD_POS_SAT64 */

#undef silk_LSHIFT8
static inline opus_int8 silk_LSHIFT8(opus_int8 a, opus_int32 shift){
    opus_int8 ret;
    ret = a << shift;
    silk_assert(shift >= 0);
    silk_assert(shift < 8);
    silk_assert((opus_int64)ret == ((opus_int64)a) << shift);
    return ret;
}

#undef silk_LSHIFT16
static inline opus_int16 silk_LSHIFT16(opus_int16 a, opus_int32 shift){
    opus_int16 ret;
    ret = a << shift;
    silk_assert(shift >= 0);
    silk_assert(shift < 16);
    silk_assert((opus_int64)ret == ((opus_int64)a) << shift);
    return ret;
}

#undef silk_LSHIFT32
static inline opus_int32 silk_LSHIFT32(opus_int32 a, opus_int32 shift){
    opus_int32 ret;
    ret = a << shift;
    silk_assert(shift >= 0);
    silk_assert(shift < 32);
    silk_assert((opus_int64)ret == ((opus_int64)a) << shift);
    return ret;
}

#undef silk_LSHIFT64
static inline opus_int64 silk_LSHIFT64(opus_int64 a, opus_int shift){
    silk_assert(shift >= 0);
    silk_assert(shift < 64);
    return a << shift;
}

#undef silk_LSHIFT_ovflw
static inline opus_int32 silk_LSHIFT_ovflw(opus_int32 a, opus_int32 shift){
    silk_assert(shift >= 0);            /* no check for overflow */
    return a << shift;
}

#undef silk_LSHIFT_uint
static inline opus_uint32 silk_LSHIFT_uint(opus_uint32 a, opus_int32 shift){
    opus_uint32 ret;
    ret = a << shift;
    silk_assert(shift >= 0);
    silk_assert((opus_int64)ret == ((opus_int64)a) << shift);
    return ret;
}

#undef silk_RSHIFT8
static inline opus_int8 silk_RSHIFT8(opus_int8 a, opus_int32 shift){
    silk_assert(shift >=  0);
    silk_assert(shift < 8);
    return a >> shift;
}

#undef silk_RSHIFT16
static inline opus_int16 silk_RSHIFT16(opus_int16 a, opus_int32 shift){
    silk_assert(shift >=  0);
    silk_assert(shift < 16);
    return a >> shift;
}

#undef silk_RSHIFT32
static inline opus_int32 silk_RSHIFT32(opus_int32 a, opus_int32 shift){
    silk_assert(shift >=  0);
    silk_assert(shift < 32);
    return a >> shift;
}

#undef silk_RSHIFT64
static inline opus_int64 silk_RSHIFT64(opus_int64 a, opus_int64 shift){
    silk_assert(shift >=  0);
    silk_assert(shift <= 63);
    return a >> shift;
}

#undef silk_RSHIFT_uint
static inline opus_uint32 silk_RSHIFT_uint(opus_uint32 a, opus_int32 shift){
    silk_assert(shift >=  0);
    silk_assert(shift <= 32);
    return a >> shift;
}

#undef silk_ADD_LSHIFT
static inline opus_int32 silk_ADD_LSHIFT(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a + (b << shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) << shift));
    return ret;                /* shift >= 0 */
}

#undef silk_ADD_LSHIFT32
static inline opus_int32 silk_ADD_LSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a + (b << shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) << shift));
    return ret;                /* shift >= 0 */
}

#undef silk_ADD_LSHIFT_uint
static inline opus_uint32 silk_ADD_LSHIFT_uint(opus_uint32 a, opus_uint32 b, opus_int32 shift){
    opus_uint32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 32);
    ret = a + (b << shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) << shift));
    return ret;                /* shift >= 0 */
}

#undef silk_ADD_RSHIFT
static inline opus_int32 silk_ADD_RSHIFT(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a + (b >> shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) >> shift));
    return ret;                /* shift  > 0 */
}

#undef silk_ADD_RSHIFT32
static inline opus_int32 silk_ADD_RSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a + (b >> shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) >> shift));
    return ret;                /* shift  > 0 */
}

#undef silk_ADD_RSHIFT_uint
static inline opus_uint32 silk_ADD_RSHIFT_uint(opus_uint32 a, opus_uint32 b, opus_int32 shift){
    opus_uint32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 32);
    ret = a + (b >> shift);
    silk_assert((opus_int64)ret == (opus_int64)a + (((opus_int64)b) >> shift));
    return ret;                /* shift  > 0 */
}

#undef silk_SUB_LSHIFT32
static inline opus_int32 silk_SUB_LSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a - (b << shift);
    silk_assert((opus_int64)ret == (opus_int64)a - (((opus_int64)b) << shift));
    return ret;                /* shift >= 0 */
}

#undef silk_SUB_RSHIFT32
static inline opus_int32 silk_SUB_RSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift >= 0);
    silk_assert(shift <= 31);
    ret = a - (b >> shift);
    silk_assert((opus_int64)ret == (opus_int64)a - (((opus_int64)b) >> shift));
    return ret;                /* shift  > 0 */
}

#undef silk_RSHIFT_ROUND
static inline opus_int32 silk_RSHIFT_ROUND(opus_int32 a, opus_int32 shift){
    opus_int32 ret;
    silk_assert(shift > 0);        /* the marco definition can't handle a shift of zero */
    silk_assert(shift < 32);
    ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
    silk_assert((opus_int64)ret == ((opus_int64)a + ((opus_int64)1 << (shift - 1))) >> shift);
    return ret;
}

#undef silk_RSHIFT_ROUND64
static inline opus_int64 silk_RSHIFT_ROUND64(opus_int64 a, opus_int32 shift){
    opus_int64 ret;
    silk_assert(shift > 0);        /* the marco definition can't handle a shift of zero */
    silk_assert(shift < 64);
    ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
    return ret;
}

/* silk_abs is used on floats also, so doesn't work... */
/*#undef silk_abs
static inline opus_int32 silk_abs(opus_int32 a){
    silk_assert(a != 0x80000000);
    return (((a) >  0)  ? (a) : -(a));            // Be careful, silk_abs returns wrong when input equals to silk_intXX_MIN
}*/

#undef silk_abs_int64
static inline opus_int64 silk_abs_int64(opus_int64 a){
    silk_assert(a != 0x8000000000000000);
    return (((a) >  0)  ? (a) : -(a));            /* Be careful, silk_abs returns wrong when input equals to silk_intXX_MIN */
}

#undef silk_abs_int32
static inline opus_int32 silk_abs_int32(opus_int32 a){
    silk_assert(a != 0x80000000);
    return abs(a);
}

#undef silk_CHECK_FIT8
static inline opus_int8 silk_CHECK_FIT8( opus_int64 a ){
    opus_int8 ret;
    ret = (opus_int8)a;
    silk_assert( (opus_int64)ret == a );
    return( ret );
}

#undef silk_CHECK_FIT16
static inline opus_int16 silk_CHECK_FIT16( opus_int64 a ){
    opus_int16 ret;
    ret = (opus_int16)a;
    silk_assert( (opus_int64)ret == a );
    return( ret );
}

#undef silk_CHECK_FIT32
static inline opus_int32 silk_CHECK_FIT32( opus_int64 a ){
    opus_int32 ret;
    ret = (opus_int32)a;
    silk_assert( (opus_int64)ret == a );
    return( ret );
}

/* no checking for silk_NSHIFT_MUL_32_32
   no checking for silk_NSHIFT_MUL_16_16
   no checking needed for silk_min
   no checking needed for silk_max
   no checking needed for silk_sign
*/

#endif
#endif /* MACRO_DEBUG_H */