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368 lines
13 KiB
C++
368 lines
13 KiB
C++
#ifndef FILE_MYSIMD
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#define FILE_MYSIMD
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/**************************************************************************/
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/* File: mysimd.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: 25. Mar. 16 */
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/**************************************************************************/
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#include <immintrin.h>
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#ifdef WIN32
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inline __m128d operator- (__m128d a) { return _mm_xor_pd(a, _mm_set1_pd(-0.0)); }
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inline __m128d operator+ (__m128d a, __m128d b) { return _mm_add_pd(a,b); }
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inline __m128d operator- (__m128d a, __m128d b) { return _mm_sub_pd(a,b); }
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inline __m128d operator* (__m128d a, __m128d b) { return _mm_mul_pd(a,b); }
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inline __m128d operator/ (__m128d a, __m128d b) { return _mm_div_pd(a,b); }
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inline __m128d operator* (double a, __m128d b) { return _mm_set1_pd(a)*b; }
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inline __m128d operator* (__m128d b, double a) { return _mm_set1_pd(a)*b; }
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inline __m128d operator+= (__m128d &a, __m128d b) { return a = a+b; }
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inline __m128d operator-= (__m128d &a, __m128d b) { return a = a-b; }
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inline __m128d operator*= (__m128d &a, __m128d b) { return a = a*b; }
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inline __m128d operator/= (__m128d &a, __m128d b) { return a = a/b; }
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inline __m256d operator- (__m256d a) { return _mm256_xor_pd(a, _mm256_set1_pd(-0.0)); }
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inline __m256d operator+ (__m256d a, __m256d b) { return _mm256_add_pd(a,b); }
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inline __m256d operator- (__m256d a, __m256d b) { return _mm256_sub_pd(a,b); }
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inline __m256d operator* (__m256d a, __m256d b) { return _mm256_mul_pd(a,b); }
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inline __m256d operator/ (__m256d a, __m256d b) { return _mm256_div_pd(a,b); }
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inline __m256d operator* (double a, __m256d b) { return _mm256_set1_pd(a)*b; }
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inline __m256d operator* (__m256d b, double a) { return _mm256_set1_pd(a)*b; }
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inline __m256d operator+= (__m256d &a, __m256d b) { return a = a+b; }
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inline __m256d operator-= (__m256d &a, __m256d b) { return a = a-b; }
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inline __m256d operator*= (__m256d &a, __m256d b) { return a = a*b; }
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inline __m256d operator/= (__m256d &a, __m256d b) { return a = a/b; }
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#endif
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namespace netgen
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{
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template <typename T> class SIMD;
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template <typename T>
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struct has_call_operator
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{
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template <typename C> static std::true_type check( decltype( sizeof(&C::operator() )) ) { return std::true_type(); }
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template <typename> static std::false_type check(...) { return std::false_type(); }
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typedef decltype( check<T>(sizeof(char)) ) type;
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static constexpr type value = type();
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};
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#ifdef __AVX__
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template<>
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class alignas(32) SIMD<double>
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{
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__m256d data;
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public:
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static constexpr int Size() { return 4; }
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SIMD () = default;
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SIMD (const SIMD &) = default;
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SIMD & operator= (const SIMD &) = default;
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SIMD (double val)
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{
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data = _mm256_set1_pd(val);
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}
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SIMD (__m256d adata)
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: data(adata)
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{ ; }
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/*
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template <typename T>
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SIMD (const T & val)
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{
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// SIMD_function(val, std::is_convertible<T, std::function<double(int)>>());
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SIMD_function(val, has_call_operator<T>::value);
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}
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*/
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/*
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template <typename T>
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SIMD & operator= (const T & val)
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{
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// SIMD_function(val, std::is_convertible<T, std::function<double(int)>>());
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SIMD_function(val, has_call_operator<T>::value);
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return *this;
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}
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*/
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template <typename Function>
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void SIMD_function (const Function & func, std::true_type)
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{
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data = _mm256_set_pd(func(3), func(2), func(1), func(0));
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}
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// not a function
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void SIMD_function (double const * p, std::false_type)
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{
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data = _mm256_loadu_pd(p);
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}
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void SIMD_function (double val, std::false_type)
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{
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data = _mm256_set1_pd(val);
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}
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void SIMD_function (__m256d _data, std::false_type)
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{
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data = _data;
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}
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inline double operator[] (int i) const { return ((double*)(&data))[i]; }
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inline __m256d Data() const { return data; }
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inline __m256d & Data() { return data; }
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};
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inline SIMD<double> operator+ (SIMD<double> a, SIMD<double> b) { return a.Data()+b.Data(); }
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inline SIMD<double> operator- (SIMD<double> a, SIMD<double> b) { return a.Data()-b.Data(); }
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inline SIMD<double> operator- (SIMD<double> a) { return -a.Data(); }
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inline SIMD<double> operator* (SIMD<double> a, SIMD<double> b) { return a.Data()*b.Data(); }
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inline SIMD<double> operator/ (SIMD<double> a, SIMD<double> b) { return a.Data()/b.Data(); }
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inline SIMD<double> operator* (double a, SIMD<double> b) { return SIMD<double>(a)*b; }
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inline SIMD<double> operator* (SIMD<double> b, double a) { return SIMD<double>(a)*b; }
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inline SIMD<double> operator+= (SIMD<double> & a, SIMD<double> b) { return a.Data()+=b.Data(); }
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inline SIMD<double> operator-= (SIMD<double> & a, SIMD<double> b) { return a.Data()-=b.Data(); }
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inline SIMD<double> operator*= (SIMD<double> & a, SIMD<double> b) { return a.Data()*=b.Data(); }
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inline SIMD<double> operator/= (SIMD<double> & a, SIMD<double> b) { return a.Data()/=b.Data(); }
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using std::sqrt;
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using std::fabs;
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inline SIMD<double> sqrt (SIMD<double> a) { return _mm256_sqrt_pd(a.Data()); }
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inline SIMD<double> fabs (SIMD<double> a) { return _mm256_max_pd(a.Data(), -a.Data()); }
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inline SIMD<double> L2Norm2 (SIMD<double> a) { return a.Data()*a.Data(); }
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inline SIMD<double> Trans (SIMD<double> a) { return a; }
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inline SIMD<double> IfPos (SIMD<double> a, SIMD<double> b, SIMD<double> c)
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{
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auto cp = _mm256_cmp_pd (a.Data(), _mm256_setzero_pd(), _CMP_GT_OS);
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return _mm256_blendv_pd(c.Data(), b.Data(), cp);
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}
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inline double HSum (SIMD<double> sd)
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{
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__m128d hv = _mm_add_pd (_mm256_extractf128_pd(sd.Data(),0), _mm256_extractf128_pd(sd.Data(),1));
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return _mm_cvtsd_f64 (_mm_hadd_pd (hv, hv));
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}
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#else
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template<>
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class SIMD<double>
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{
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double data;
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public:
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static constexpr int Size() { return 1; }
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SIMD () = default;
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SIMD (const SIMD &) = default;
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SIMD & operator= (const SIMD &) = default;
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SIMD (double val)
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: data(val) { ; }
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/*
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template <typename T>
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SIMD (const T & val)
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{
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// SIMD_function(val, std::is_convertible<T, std::function<double(int)>>());
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SIMD_function(val, has_call_operator<T>::value);
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}
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*/
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template <typename T>
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SIMD & operator= (const T & val)
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{
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// SIMD_function(val, std::is_convertible<T, std::function<double(int)>>());
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SIMD_function(val, has_call_operator<T>::value);
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return *this;
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}
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template <typename Function>
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void SIMD_function (const Function & func, std::true_type)
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{
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data = func(0);
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}
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// not a function
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void SIMD_function (double const * p, std::false_type)
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{
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data = *p;
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}
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void SIMD_function (double val, std::false_type)
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{
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data = val;
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}
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double operator[] (int i) const { return ((double*)(&data))[i]; }
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double Data() const { return data; }
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double & Data() { return data; }
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};
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inline SIMD<double> operator+ (SIMD<double> a, SIMD<double> b) { return a.Data()+b.Data(); }
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inline SIMD<double> operator- (SIMD<double> a, SIMD<double> b) { return a.Data()-b.Data(); }
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inline SIMD<double> operator- (SIMD<double> a) { return -a.Data(); }
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inline SIMD<double> operator* (SIMD<double> a, SIMD<double> b) { return a.Data()*b.Data(); }
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inline SIMD<double> operator/ (SIMD<double> a, SIMD<double> b) { return a.Data()/b.Data(); }
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inline SIMD<double> operator* (double a, SIMD<double> b) { return SIMD<double>(a)*b; }
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inline SIMD<double> operator* (SIMD<double> b, double a) { return SIMD<double>(a)*b; }
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inline SIMD<double> operator+= (SIMD<double> & a, SIMD<double> b) { return a.Data()+=b.Data(); }
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inline SIMD<double> operator-= (SIMD<double> & a, SIMD<double> b) { return a.Data()-=b.Data(); }
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inline SIMD<double> operator*= (SIMD<double> & a, SIMD<double> b) { return a.Data()*=b.Data(); }
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inline SIMD<double> operator/= (SIMD<double> & a, SIMD<double> b) { return a.Data()/=b.Data(); }
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using std::sqrt;
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using std::fabs;
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inline SIMD<double> sqrt (SIMD<double> a) { return std::sqrt(a.Data()); }
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inline SIMD<double> fabs (SIMD<double> a) { return std::fabs(a.Data()); }
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inline SIMD<double> L2Norm2 (SIMD<double> a) { return a.Data()*a.Data(); }
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inline SIMD<double> Trans (SIMD<double> a) { return a; }
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inline SIMD<double> IfPos (SIMD<double> a, SIMD<double> b, SIMD<double> c)
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{
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return (a.Data() > 0) ? b : c;
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}
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inline double HSum (SIMD<double> sd)
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{ return sd.Data(); }
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#endif
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template <typename T>
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ostream & operator<< (ostream & ost, SIMD<T> simd)
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{
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ost << simd[0];
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for (int i = 1; i < simd.Size(); i++)
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ost << " " << simd[i];
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return ost;
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}
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/*
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using std::exp;
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inline netgen::SIMD<double> exp (netgen::SIMD<double> a) {
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return netgen::SIMD<double>([&](int i)->double { return exp(a[i]); } );
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}
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using std::log;
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inline netgen::SIMD<double> log (netgen::SIMD<double> a) {
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return netgen::SIMD<double>([&](int i)->double { return log(a[i]); } );
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}
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using std::pow;
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inline netgen::SIMD<double> pow (netgen::SIMD<double> a, double x) {
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return netgen::SIMD<double>([&](int i)->double { return pow(a[i],x); } );
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}
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*/
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template <int D, typename T>
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class MultiSIMD
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{
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SIMD<T> head;
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MultiSIMD<D-1,T> tail;
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public:
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MultiSIMD () = default;
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MultiSIMD (const MultiSIMD & ) = default;
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MultiSIMD (T v) : head(v), tail(v) { ; }
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MultiSIMD (SIMD<T> _head, MultiSIMD<D-1,T> _tail)
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: head(_head), tail(_tail) { ; }
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SIMD<T> Head() const { return head; }
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MultiSIMD<D-1,T> Tail() const { return tail; }
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SIMD<T> & Head() { return head; }
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MultiSIMD<D-1,T> & Tail() { return tail; }
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template <int NR>
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SIMD<T> Get() const { return NR==0 ? head : tail.template Get<NR-1>(); }
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template <int NR>
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SIMD<T> & Get() { return NR==0 ? head : tail.template Get<NR-1>(); }
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};
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template <typename T>
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class MultiSIMD<2,T>
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{
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SIMD<T> v0, v1;
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public:
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MultiSIMD () = default;
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MultiSIMD (const MultiSIMD & ) = default;
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MultiSIMD (T v) : v0(v), v1(v) { ; }
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MultiSIMD (SIMD<T> _v0, SIMD<T> _v1) : v0(_v0), v1(_v1) { ; }
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SIMD<T> Head() const { return v0; }
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SIMD<T> Tail() const { return v1; }
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SIMD<T> & Head() { return v0; }
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SIMD<T> & Tail() { return v1; }
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template <int NR>
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SIMD<T> Get() const { return NR==0 ? v0 : v1; }
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template <int NR>
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SIMD<T> & Get() { return NR==0 ? v0 : v1; }
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};
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template <int D> inline MultiSIMD<D,double> operator+ (MultiSIMD<D,double> a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a.Head()+b.Head(), a.Tail()+b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator+ (double a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a+b.Head(), a+b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator+ (MultiSIMD<D,double> b, double a)
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{ return MultiSIMD<D,double> (a+b.Head(), a+b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator- (MultiSIMD<D,double> a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a.Head()-b.Head(), a.Tail()-b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator- (double a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a-b.Head(), a-b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator- (MultiSIMD<D,double> b, double a)
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{ return MultiSIMD<D,double> (b.Head()-a, b.Tail()-a); }
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template <int D> inline MultiSIMD<D,double> operator- (MultiSIMD<D,double> a)
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{ return MultiSIMD<D,double> (-a.Head(), -a.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator* (MultiSIMD<D,double> a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a.Head()*b.Head(), a.Tail()*b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator/ (MultiSIMD<D,double> a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> (a.Head()/b.Head(), a.Tail()/b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator* (double a, MultiSIMD<D,double> b)
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{ return MultiSIMD<D,double> ( a*b.Head(), a*b.Tail()); }
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template <int D> inline MultiSIMD<D,double> operator* (MultiSIMD<D,double> b, double a)
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{ return MultiSIMD<D,double> ( a*b.Head(), a*b.Tail()); }
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template <int D> inline MultiSIMD<D,double> & operator+= (MultiSIMD<D,double> & a, MultiSIMD<D,double> b)
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{ a.Head()+=b.Head(); a.Tail()+=b.Tail(); return a; }
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template <int D> inline MultiSIMD<D,double> operator-= (MultiSIMD<D,double> & a, double b)
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{ a.Head()-=b; a.Tail()-=b; return a; }
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template <int D> inline MultiSIMD<D,double> operator-= (MultiSIMD<D,double> & a, MultiSIMD<D,double> b)
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{ a.Head()-=b.Head(); a.Tail()-=b.Tail(); return a; }
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template <int D> inline MultiSIMD<D,double> & operator*= (MultiSIMD<D,double> & a, MultiSIMD<D,double> b)
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{ a.Head()*=b.Head(); a.Tail()*=b.Tail(); return a; }
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template <int D> inline MultiSIMD<D,double> & operator*= (MultiSIMD<D,double> & a, double b)
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{ a.Head()*=b; a.Tail()*=b; return a; }
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// inline MultiSIMD<double> operator/= (MultiSIMD<double> & a, MultiSIMD<double> b) { return a.Data()/=b.Data(); }
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template <int D, typename T>
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ostream & operator<< (ostream & ost, MultiSIMD<D,T> multi)
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{
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ost << multi.Head() << " " << multi.Tail();
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return ost;
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}
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}
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#endif
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