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// ==========================================================================
// SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2026, Knut Reinert, FU Berlin
// All rights reserved.
//
// 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 Knut Reinert or the FU Berlin 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 KNUT REINERT OR THE FU BERLIN 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.
//
// ==========================================================================
// Author: David Weese <david.weese@fu-berlin.de>
// René Rahn <rene.rahn@fu-berlin.de>
// Stefan Budach <stefan.budach@fu-berlin.de>
// ==========================================================================
// generic SIMD interface for SSE3 / AVX2
// ==========================================================================
#ifndef SEQAN_INCLUDE_SEQAN_SIMD_SIMD_BASE_SEQAN_IMPL_H_
#define SEQAN_INCLUDE_SEQAN_SIMD_SIMD_BASE_SEQAN_IMPL_H_
#include <utility>
#include <tuple>
#if defined(PLATFORM_WINDOWS_VS)
/* Microsoft C/C++-compatible compiler */
#include <intrin.h>
#elif defined(PLATFORM_GCC) && (defined(__x86_64__) || defined(__i386__))
/* GCC-compatible compiler, targeting x86/x86-64 */
#include <x86intrin.h>
#elif defined(SEQAN_SIMD_ENABLED)
#pragma message "You are trying to build with -DSEQAN_SIMD_ENABLED, which might be " \
"auto-defined if AVX or SSE was enabled (e.g. -march=native, -msse4, ...), " \
"but we only support x86/x86-64 architectures for SIMD vectorization! " \
"You might want to use UME::SIMD (https://github.com/edanor/umesimd) combined " \
"with -DSEQAN_UMESIMD_ENABLED for a different SIMD backend."
#endif
namespace seqan2 {
#ifdef COMPILER_LINTEL
#include <type_traits>
#define SEQAN_VECTOR_CAST_(T, v) static_cast<typename std::decay<T>::type>(v)
#define SEQAN_VECTOR_CAST_LVALUE_(T, v) static_cast<T>(v)
#else
#define SEQAN_VECTOR_CAST_(T, v) reinterpret_cast<T>(v)
#define SEQAN_VECTOR_CAST_LVALUE_(T, v) reinterpret_cast<T>(v)
#endif
// ============================================================================
// Forwards
// ============================================================================
// ============================================================================
// Useful Macros
// ============================================================================
#define SEQAN_DEFINE_SIMD_VECTOR_GETVALUE_(TSimdVector) \
template <typename TPosition> \
inline typename Value<TSimdVector>::Type \
getValue(TSimdVector & vector, TPosition const pos) \
{ \
return vector[pos]; \
}
#define SEQAN_DEFINE_SIMD_VECTOR_VALUE_(TSimdVector) \
template <typename TPosition> \
inline typename Value<TSimdVector>::Type \
value(TSimdVector & vector, TPosition const pos) \
{ \
return getValue(vector, pos); \
}
#define SEQAN_DEFINE_SIMD_VECTOR_ASSIGNVALUE_(TSimdVector) \
template <typename TPosition, typename TValue2> \
inline void \
assignValue(TSimdVector & vector, TPosition const pos, TValue2 const value) \
{ \
vector[pos] = value; \
}
// Only include following code if simd instructions are enabled.
#ifdef SEQAN_SIMD_ENABLED
// ============================================================================
// Tags, Classes, Enums
// ============================================================================
// a metafunction returning the biggest supported SIMD vector
template <typename TValue, int LENGTH = SEQAN_SIZEOF_MAX_VECTOR / sizeof(TValue)>
struct SimdVector;
// internal struct to specialize for vector parameters
// VEC_SIZE = Vector size := sizeof(vec)
// LENGTH = number of elements := VEC_SIZE / sizeof(InnerValue<TVec>::Type)
// SCALAR_TYPE = the scalar type of the vector (maybe optional, if the type
// doesn't matter for the operation)
template <int VEC_SIZE, int LENGTH = 0, typename SCALAR_TYPE = void>
struct SimdParams_
{};
// internal traits meta-function to capture correct the mask type.
template <typename TSimdVector, typename TSimdParams>
struct SimdVectorTraits
{
using MaskType = TSimdVector;
};
// internal struct to specialize for matrix parameters
template <int ROWS, int COLS, int BITS_PER_VALUE>
struct SimdMatrixParams_
{};
#define SEQAN_DEFINE_SIMD_VECTOR_(TSimdVector, TValue, SIZEOF_VECTOR) \
typedef TValue TSimdVector __attribute__ ((__vector_size__(SIZEOF_VECTOR))); \
template <> struct SimdVector<TValue, SIZEOF_VECTOR / sizeof(TValue)> { typedef TSimdVector Type; }; \
template <> struct Value<TSimdVector> { typedef TValue Type; }; \
template <> struct Value<TSimdVector const>: public Value<TSimdVector> {}; \
template <> struct LENGTH<TSimdVector> { enum { VALUE = SIZEOF_VECTOR / sizeof(TValue) }; }; \
template <> struct LENGTH<TSimdVector const>: public LENGTH<TSimdVector> {}; \
SEQAN_DEFINE_SIMD_VECTOR_GETVALUE_(TSimdVector) \
SEQAN_DEFINE_SIMD_VECTOR_GETVALUE_(TSimdVector const) \
SEQAN_DEFINE_SIMD_VECTOR_VALUE_(TSimdVector) \
SEQAN_DEFINE_SIMD_VECTOR_VALUE_(TSimdVector const) \
SEQAN_DEFINE_SIMD_VECTOR_ASSIGNVALUE_(TSimdVector) \
template <> struct IsSimple_<TSimdVector> { typedef True Type; }; \
template <> \
SEQAN_CONCEPT_IMPL((TSimdVector), (SimdVectorConcept)); \
template <> \
SEQAN_CONCEPT_IMPL((TSimdVector const), (SimdVectorConcept));
#endif // SEQAN_SIMD_ENABLED
} // namespace seqan2
#endif // SEQAN_INCLUDE_SEQAN_SIMD_SIMD_BASE_SEQAN_IMPL_H_
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