src/libFLAC/fixed_intrin_sse42.c - platform/external/flac - Git at Google

 /* libFLAC - Free Lossless Audio Codec library
  * Copyright (C) 2000-2009  Josh Coalson
  * Copyright (C) 2011-2022  Xiph.Org Foundation
  *
  * 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 the Xiph.org Foundation nor the names of its
  * 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 FOUNDATION 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

 #include "private/cpu.h"

 #ifndef FLAC__INTEGER_ONLY_LIBRARY
 #ifndef FLAC__NO_ASM
 #if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN
 #include "private/fixed.h"
 #ifdef FLAC__SSE4_2_SUPPORTED

 #include <nmmintrin.h> /* SSE4.2 */
 #include <math.h>
 #include "private/macros.h"
 #include "share/compat.h"
 #include "FLAC/assert.h"

 #ifdef local_abs64
 #undef local_abs64
 #endif
 #define local_abs64(x) ((uint64_t)((x)<0? -(x) : (x)))

 #define CHECK_ORDER_IS_VALID(macro_order)  \
 if(shadow_error_##macro_order <= INT32_MAX) { \
 	if(total_error_##macro_order < smallest_error) { \
 		order = macro_order; \
 		smallest_error = total_error_##macro_order ; \
 	} \
 	residual_bits_per_sample[ macro_order ] = (float)((total_error_0 > 0) ? log(M_LN2 * (double)total_error_0 / (double)data_len) / M_LN2 : 0.0); \
 } \
 else \
 	residual_bits_per_sample[ macro_order ] = 34.0f;

 FLAC__SSE_TARGET("sse4.2")
 uint32_t FLAC__fixed_compute_best_predictor_limit_residual_intrin_sse42(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1])
 {
 	FLAC__uint64 total_error_0 = 0, total_error_1 = 0, total_error_2 = 0, total_error_3 = 0, total_error_4 = 0, smallest_error = UINT64_MAX;
 	FLAC__uint64 shadow_error_0 = 0, shadow_error_1 = 0, shadow_error_2 = 0, shadow_error_3 = 0, shadow_error_4 = 0;
 	FLAC__uint64 error_0, error_1, error_2, error_3, error_4;
 	FLAC__int32 i, data_len_int;
 	uint32_t order = 0;
 	__m128i total_err0, total_err1, total_err2, total_err3, total_err4;
 	__m128i shadow_err0, shadow_err1, shadow_err2, shadow_err3, shadow_err4;
 	__m128i prev_err0,  prev_err1,  prev_err2,  prev_err3;
 	__m128i tempA, tempB, bitmask;
 	FLAC__int64 data_scalar[2];
 	FLAC__int64 prev_err0_scalar[2];
 	FLAC__int64 prev_err1_scalar[2];
 	FLAC__int64 prev_err2_scalar[2];
 	FLAC__int64 prev_err3_scalar[2];
 	total_err0 = _mm_setzero_si128();
 	total_err1 = _mm_setzero_si128();
 	total_err2 = _mm_setzero_si128();
 	total_err3 = _mm_setzero_si128();
 	total_err4 = _mm_setzero_si128();
 	shadow_err0 = _mm_setzero_si128();
 	shadow_err1 = _mm_setzero_si128();
 	shadow_err2 = _mm_setzero_si128();
 	shadow_err3 = _mm_setzero_si128();
 	shadow_err4 = _mm_setzero_si128();
 	data_len_int = data_len;

 	/* First take care of preceding samples */
 	for(i = -4; i < 0; i++) {
 		error_0 = local_abs64((FLAC__int64)data[i]);
 		error_1 = (i > -4) ? local_abs64((FLAC__int64)data[i] - data[i-1]) : 0 ;
 		error_2 = (i > -3) ? local_abs64((FLAC__int64)data[i] - 2 * (FLAC__int64)data[i-1] + data[i-2]) : 0;
 		error_3 = (i > -2) ? local_abs64((FLAC__int64)data[i] - 3 * (FLAC__int64)data[i-1] + 3 * (FLAC__int64)data[i-2] - data[i-3]) : 0;

 		total_error_0 += error_0;
 		total_error_1 += error_1;
 		total_error_2 += error_2;
 		total_error_3 += error_3;

 		shadow_error_0 |= error_0;
 		shadow_error_1 |= error_1;
 		shadow_error_2 |= error_2;
 		shadow_error_3 |= error_3;
 	}

 	for(i = 0; i < 2; i++){
 		prev_err0_scalar[i] = data[-1+i*(data_len_int/2)];
 		prev_err1_scalar[i] = (FLAC__int64)(data[-1+i*(data_len_int/2)]) - data[-2+i*(data_len_int/2)];
 		prev_err2_scalar[i] = prev_err1_scalar[i] - ((FLAC__int64)(data[-2+i*(data_len_int/2)]) - data[-3+i*(data_len_int/2)]);
 		prev_err3_scalar[i] = prev_err2_scalar[i] - ((FLAC__int64)(data[-2+i*(data_len_int/2)]) - 2*(FLAC__int64)(data[-3+i*(data_len_int/2)]) + data[-4+i*(data_len_int/2)]);
 	}
 	prev_err0 = _mm_loadu_si128((const __m128i*)prev_err0_scalar);
 	prev_err1 = _mm_loadu_si128((const __m128i*)prev_err1_scalar);
 	prev_err2 = _mm_loadu_si128((const __m128i*)prev_err2_scalar);
 	prev_err3 = _mm_loadu_si128((const __m128i*)prev_err3_scalar);
 	for(i = 0; i < data_len_int / 2; i++){
 		data_scalar[0] = data[i];
 		data_scalar[1] = data[i+data_len/2];
 		tempA = _mm_loadu_si128((const __m128i*)data_scalar);
 		/* Next three intrinsics calculate tempB as abs of tempA */
 		bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
 		tempB = _mm_xor_si128(tempA, bitmask);
 		tempB = _mm_sub_epi64(tempB, bitmask);
 		total_err0 = _mm_add_epi64(total_err0,tempB);
 		shadow_err0 = _mm_xor_si128(shadow_err0,tempB);
 		tempB = _mm_sub_epi64(tempA,prev_err0);
 		prev_err0 = tempA;
 		/* Next three intrinsics calculate tempA as abs of tempB */
 		bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempB);
 		tempA = _mm_xor_si128(tempB, bitmask);
 		tempA = _mm_sub_epi64(tempA, bitmask);
 		total_err1 = _mm_add_epi64(total_err1,tempA);
 		shadow_err1 = _mm_xor_si128(shadow_err1,tempA);
 		tempA = _mm_sub_epi64(tempB,prev_err1);
 		prev_err1 = tempB;
 		/* Next three intrinsics calculate tempB as abs of tempA */
 		bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
 		tempB = _mm_xor_si128(tempA, bitmask);
 		tempB = _mm_sub_epi64(tempB, bitmask);
 		total_err2 = _mm_add_epi64(total_err2,tempB);
 		shadow_err2 = _mm_xor_si128(shadow_err2,tempB);
 		tempB = _mm_sub_epi64(tempA,prev_err2);
 		prev_err2 = tempA;
 		/* Next three intrinsics calculate tempA as abs of tempB */
 		bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempB);
 		tempA = _mm_xor_si128(tempB, bitmask);
 		tempA = _mm_sub_epi64(tempA, bitmask);
 		total_err3 = _mm_add_epi64(total_err3,tempA);
 		shadow_err3 = _mm_xor_si128(shadow_err3,tempA);
 		tempA = _mm_sub_epi64(tempB,prev_err3);
 		prev_err3 = tempB;
 		/* Next three intrinsics calculate tempB as abs of tempA */
 		bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
 		tempB = _mm_xor_si128(tempA, bitmask);
 		tempB = _mm_sub_epi64(tempB, bitmask);
 		total_err4 = _mm_add_epi64(total_err4,tempB);
 		shadow_err4 = _mm_xor_si128(shadow_err4,tempB);
 	}
 	_mm_storeu_si128((__m128i*)data_scalar,total_err0);
 	total_error_0 += data_scalar[0] + data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,total_err1);
 	total_error_1 += data_scalar[0] + data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,total_err2);
 	total_error_2 += data_scalar[0] + data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,total_err3);
 	total_error_3 += data_scalar[0] + data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,total_err4);
 	total_error_4 += data_scalar[0] + data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,shadow_err0);
 	shadow_error_0 += data_scalar[0] | data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,shadow_err1);
 	shadow_error_1 += data_scalar[0] | data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,shadow_err2);
 	shadow_error_2 += data_scalar[0] | data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,shadow_err3);
 	shadow_error_3 += data_scalar[0] | data_scalar[1];
 	_mm_storeu_si128((__m128i*)data_scalar,shadow_err4);
 	shadow_error_4 += data_scalar[0] | data_scalar[1];

 	/* Take care of remaining sample */
 	if(data_len_int % 2 > 0) {
 		i += data_len/2;
 		error_0 = local_abs64((FLAC__int64)data[i]);
 		error_1 = local_abs64((FLAC__int64)data[i] - data[i-1]);
 		error_2 = local_abs64((FLAC__int64)data[i] - 2 * (FLAC__int64)data[i-1] + data[i-2]);
 		error_3 = local_abs64((FLAC__int64)data[i] - 3 * (FLAC__int64)data[i-1] + 3 * (FLAC__int64)data[i-2] - data[i-3]);
 		error_4 = local_abs64((FLAC__int64)data[i] - 4 * (FLAC__int64)data[i-1] + 6 * (FLAC__int64)data[i-2] - 4 * (FLAC__int64)data[i-3] + data[i-4]);

 		total_error_0 += error_0;
 		total_error_1 += error_1;
 		total_error_2 += error_2;
 		total_error_3 += error_3;
 		total_error_4 += error_4;

 		shadow_error_0 |= error_0;
 		shadow_error_1 |= error_1;
 		shadow_error_2 |= error_2;
 		shadow_error_3 |= error_3;
 		shadow_error_4 |= error_4;
 	}


 	CHECK_ORDER_IS_VALID(0);
 	CHECK_ORDER_IS_VALID(1);
 	CHECK_ORDER_IS_VALID(2);
 	CHECK_ORDER_IS_VALID(3);
 	CHECK_ORDER_IS_VALID(4);

 	return order;
 }

 #endif /* FLAC__SSE4_2_SUPPORTED */
 #endif /* (FLAC__CPU_IA32 || FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN */
 #endif /* FLAC__NO_ASM */
 #endif /* FLAC__INTEGER_ONLY_LIBRARY */
	/* libFLAC - Free Lossless Audio Codec library
	* Copyright (C) 2000-2009 Josh Coalson
	* Copyright (C) 2011-2022 Xiph.Org Foundation
	*
	* 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 the Xiph.org Foundation nor the names of its
	* 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 FOUNDATION 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

	#include "private/cpu.h"

	#ifndef FLAC__INTEGER_ONLY_LIBRARY
	#ifndef FLAC__NO_ASM
	#if (defined FLAC__CPU_IA32 \|\| defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN
	#include "private/fixed.h"
	#ifdef FLAC__SSE4_2_SUPPORTED

	#include <nmmintrin.h> /* SSE4.2 */
	#include <math.h>
	#include "private/macros.h"
	#include "share/compat.h"
	#include "FLAC/assert.h"

	#ifdef local_abs64
	#undef local_abs64
	#endif
	#define local_abs64(x) ((uint64_t)((x)<0? -(x) : (x)))

	#define CHECK_ORDER_IS_VALID(macro_order) \
	if(shadow_error_##macro_order <= INT32_MAX) { \
	if(total_error_##macro_order < smallest_error) { \
	order = macro_order; \
	smallest_error = total_error_##macro_order ; \
	} \
	residual_bits_per_sample[ macro_order ] = (float)((total_error_0 > 0) ? log(M_LN2 * (double)total_error_0 / (double)data_len) / M_LN2 : 0.0); \
	} \
	else \
	residual_bits_per_sample[ macro_order ] = 34.0f;

	FLAC__SSE_TARGET("sse4.2")
	uint32_t FLAC__fixed_compute_best_predictor_limit_residual_intrin_sse42(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1])
	{
	FLAC__uint64 total_error_0 = 0, total_error_1 = 0, total_error_2 = 0, total_error_3 = 0, total_error_4 = 0, smallest_error = UINT64_MAX;
	FLAC__uint64 shadow_error_0 = 0, shadow_error_1 = 0, shadow_error_2 = 0, shadow_error_3 = 0, shadow_error_4 = 0;
	FLAC__uint64 error_0, error_1, error_2, error_3, error_4;
	FLAC__int32 i, data_len_int;
	uint32_t order = 0;
	__m128i total_err0, total_err1, total_err2, total_err3, total_err4;
	__m128i shadow_err0, shadow_err1, shadow_err2, shadow_err3, shadow_err4;
	__m128i prev_err0, prev_err1, prev_err2, prev_err3;
	__m128i tempA, tempB, bitmask;
	FLAC__int64 data_scalar[2];
	FLAC__int64 prev_err0_scalar[2];
	FLAC__int64 prev_err1_scalar[2];
	FLAC__int64 prev_err2_scalar[2];
	FLAC__int64 prev_err3_scalar[2];
	total_err0 = _mm_setzero_si128();
	total_err1 = _mm_setzero_si128();
	total_err2 = _mm_setzero_si128();
	total_err3 = _mm_setzero_si128();
	total_err4 = _mm_setzero_si128();
	shadow_err0 = _mm_setzero_si128();
	shadow_err1 = _mm_setzero_si128();
	shadow_err2 = _mm_setzero_si128();
	shadow_err3 = _mm_setzero_si128();
	shadow_err4 = _mm_setzero_si128();
	data_len_int = data_len;

	/* First take care of preceding samples */
	for(i = -4; i < 0; i++) {
	error_0 = local_abs64((FLAC__int64)data[i]);
	error_1 = (i > -4) ? local_abs64((FLAC__int64)data[i] - data[i-1]) : 0 ;
	error_2 = (i > -3) ? local_abs64((FLAC__int64)data[i] - 2 * (FLAC__int64)data[i-1] + data[i-2]) : 0;
	error_3 = (i > -2) ? local_abs64((FLAC__int64)data[i] - 3 * (FLAC__int64)data[i-1] + 3 * (FLAC__int64)data[i-2] - data[i-3]) : 0;

	total_error_0 += error_0;
	total_error_1 += error_1;
	total_error_2 += error_2;
	total_error_3 += error_3;

	shadow_error_0 \|= error_0;
	shadow_error_1 \|= error_1;
	shadow_error_2 \|= error_2;
	shadow_error_3 \|= error_3;
	}

	for(i = 0; i < 2; i++){
	prev_err0_scalar[i] = data[-1+i*(data_len_int/2)];
	prev_err1_scalar[i] = (FLAC__int64)(data[-1+i(data_len_int/2)]) - data[-2+i(data_len_int/2)];
	prev_err2_scalar[i] = prev_err1_scalar[i] - ((FLAC__int64)(data[-2+i(data_len_int/2)]) - data[-3+i(data_len_int/2)]);
	prev_err3_scalar[i] = prev_err2_scalar[i] - ((FLAC__int64)(data[-2+i(data_len_int/2)]) - 2(FLAC__int64)(data[-3+i(data_len_int/2)]) + data[-4+i(data_len_int/2)]);
	}
	prev_err0 = _mm_loadu_si128((const __m128i*)prev_err0_scalar);
	prev_err1 = _mm_loadu_si128((const __m128i*)prev_err1_scalar);
	prev_err2 = _mm_loadu_si128((const __m128i*)prev_err2_scalar);
	prev_err3 = _mm_loadu_si128((const __m128i*)prev_err3_scalar);
	for(i = 0; i < data_len_int / 2; i++){
	data_scalar[0] = data[i];
	data_scalar[1] = data[i+data_len/2];
	tempA = _mm_loadu_si128((const __m128i*)data_scalar);
	/* Next three intrinsics calculate tempB as abs of tempA */
	bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
	tempB = _mm_xor_si128(tempA, bitmask);
	tempB = _mm_sub_epi64(tempB, bitmask);
	total_err0 = _mm_add_epi64(total_err0,tempB);
	shadow_err0 = _mm_xor_si128(shadow_err0,tempB);
	tempB = _mm_sub_epi64(tempA,prev_err0);
	prev_err0 = tempA;
	/* Next three intrinsics calculate tempA as abs of tempB */
	bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempB);
	tempA = _mm_xor_si128(tempB, bitmask);
	tempA = _mm_sub_epi64(tempA, bitmask);
	total_err1 = _mm_add_epi64(total_err1,tempA);
	shadow_err1 = _mm_xor_si128(shadow_err1,tempA);
	tempA = _mm_sub_epi64(tempB,prev_err1);
	prev_err1 = tempB;
	/* Next three intrinsics calculate tempB as abs of tempA */
	bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
	tempB = _mm_xor_si128(tempA, bitmask);
	tempB = _mm_sub_epi64(tempB, bitmask);
	total_err2 = _mm_add_epi64(total_err2,tempB);
	shadow_err2 = _mm_xor_si128(shadow_err2,tempB);
	tempB = _mm_sub_epi64(tempA,prev_err2);
	prev_err2 = tempA;
	/* Next three intrinsics calculate tempA as abs of tempB */
	bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempB);
	tempA = _mm_xor_si128(tempB, bitmask);
	tempA = _mm_sub_epi64(tempA, bitmask);
	total_err3 = _mm_add_epi64(total_err3,tempA);
	shadow_err3 = _mm_xor_si128(shadow_err3,tempA);
	tempA = _mm_sub_epi64(tempB,prev_err3);
	prev_err3 = tempB;
	/* Next three intrinsics calculate tempB as abs of tempA */
	bitmask = _mm_cmpgt_epi64(_mm_set1_epi64x(0), tempA);
	tempB = _mm_xor_si128(tempA, bitmask);
	tempB = _mm_sub_epi64(tempB, bitmask);
	total_err4 = _mm_add_epi64(total_err4,tempB);
	shadow_err4 = _mm_xor_si128(shadow_err4,tempB);
	}
	_mm_storeu_si128((__m128i*)data_scalar,total_err0);
	total_error_0 += data_scalar[0] + data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,total_err1);
	total_error_1 += data_scalar[0] + data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,total_err2);
	total_error_2 += data_scalar[0] + data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,total_err3);
	total_error_3 += data_scalar[0] + data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,total_err4);
	total_error_4 += data_scalar[0] + data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,shadow_err0);
	shadow_error_0 += data_scalar[0] \| data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,shadow_err1);
	shadow_error_1 += data_scalar[0] \| data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,shadow_err2);
	shadow_error_2 += data_scalar[0] \| data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,shadow_err3);
	shadow_error_3 += data_scalar[0] \| data_scalar[1];
	_mm_storeu_si128((__m128i*)data_scalar,shadow_err4);
	shadow_error_4 += data_scalar[0] \| data_scalar[1];

	/* Take care of remaining sample */
	if(data_len_int % 2 > 0) {
	i += data_len/2;
	error_0 = local_abs64((FLAC__int64)data[i]);
	error_1 = local_abs64((FLAC__int64)data[i] - data[i-1]);
	error_2 = local_abs64((FLAC__int64)data[i] - 2 * (FLAC__int64)data[i-1] + data[i-2]);
	error_3 = local_abs64((FLAC__int64)data[i] - 3 * (FLAC__int64)data[i-1] + 3 * (FLAC__int64)data[i-2] - data[i-3]);
	error_4 = local_abs64((FLAC__int64)data[i] - 4 * (FLAC__int64)data[i-1] + 6 * (FLAC__int64)data[i-2] - 4 * (FLAC__int64)data[i-3] + data[i-4]);

	total_error_0 += error_0;
	total_error_1 += error_1;
	total_error_2 += error_2;
	total_error_3 += error_3;
	total_error_4 += error_4;

	shadow_error_0 \|= error_0;
	shadow_error_1 \|= error_1;
	shadow_error_2 \|= error_2;
	shadow_error_3 \|= error_3;
	shadow_error_4 \|= error_4;
	}


	CHECK_ORDER_IS_VALID(0);
	CHECK_ORDER_IS_VALID(1);
	CHECK_ORDER_IS_VALID(2);
	CHECK_ORDER_IS_VALID(3);
	CHECK_ORDER_IS_VALID(4);

	return order;
	}

	#endif /* FLAC__SSE4_2_SUPPORTED */
	#endif /* (FLAC__CPU_IA32 \|\| FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN */
	#endif /* FLAC__NO_ASM */
	#endif /* FLAC__INTEGER_ONLY_LIBRARY */