mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 15:55:37 +00:00
474 lines
16 KiB
C++
474 lines
16 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./lib/tensors/Tensor_class.h
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
|
|
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
See the full license in the file "LICENSE" in the top level distribution
|
|
directory
|
|
*************************************************************************************/
|
|
/* END LEGAL */
|
|
#ifndef GRID_MATH_TENSORS_H
|
|
#define GRID_MATH_TENSORS_H
|
|
|
|
namespace Grid {
|
|
|
|
///////////////////////////////////////////////////
|
|
// Scalar, Vector, Matrix objects.
|
|
// These can be composed to form tensor products of internal indices.
|
|
///////////////////////////////////////////////////
|
|
|
|
// It is useful to NOT have any constructors
|
|
// so that these classes assert "is_pod<class> == true"
|
|
// because then the standard C++ valarray container eliminates fill overhead on
|
|
// new allocation and
|
|
// non-move copying.
|
|
//
|
|
// However note that doing this eliminates some syntactical sugar such as
|
|
// calling the constructor explicitly or implicitly
|
|
//
|
|
class GridTensorBase {};
|
|
|
|
template <class vtype>
|
|
class iScalar {
|
|
public:
|
|
vtype _internal;
|
|
|
|
typedef vtype element;
|
|
typedef typename GridTypeMapper<vtype>::scalar_type scalar_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_type vector_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_typeD vector_typeD;
|
|
typedef typename GridTypeMapper<vtype>::tensor_reduced tensor_reduced_v;
|
|
typedef iScalar<tensor_reduced_v> tensor_reduced;
|
|
typedef typename GridTypeMapper<vtype>::scalar_object recurse_scalar_object;
|
|
typedef iScalar<recurse_scalar_object> scalar_object;
|
|
|
|
// substitutes a real or complex version with same tensor structure
|
|
typedef iScalar<typename GridTypeMapper<vtype>::Complexified> Complexified;
|
|
typedef iScalar<typename GridTypeMapper<vtype>::Realified> Realified;
|
|
|
|
enum { TensorLevel = GridTypeMapper<vtype>::TensorLevel + 1 };
|
|
|
|
// Scalar no action
|
|
// template<int Level> using tensor_reduce_level = typename
|
|
// iScalar<GridTypeMapper<vtype>::tensor_reduce_level<Level> >;
|
|
iScalar() = default;
|
|
/*
|
|
iScalar(const iScalar<vtype> ©me)=default;
|
|
iScalar(iScalar<vtype> &©me)=default;
|
|
iScalar<vtype> & operator= (const iScalar<vtype> ©me) = default;
|
|
iScalar<vtype> & operator= (iScalar<vtype> &©me) = default;
|
|
*/
|
|
iScalar(scalar_type s)
|
|
: _internal(s){}; // recurse down and hit the constructor for vector_type
|
|
iScalar(const Zero &z) { *this = zero; };
|
|
|
|
iScalar<vtype> &operator=(const Zero &hero) {
|
|
zeroit(*this);
|
|
return *this;
|
|
}
|
|
friend strong_inline void vstream(iScalar<vtype> &out,
|
|
const iScalar<vtype> &in) {
|
|
vstream(out._internal, in._internal);
|
|
}
|
|
friend strong_inline void vbroadcast(iScalar<vtype> &out,const iScalar<vtype> &in,int lane){
|
|
vbroadcast(out._internal,in._internal,lane);
|
|
}
|
|
friend strong_inline void zeroit(iScalar<vtype> &that){
|
|
zeroit(that._internal);
|
|
}
|
|
friend strong_inline void prefetch(iScalar<vtype> &that) {
|
|
prefetch(that._internal);
|
|
}
|
|
friend strong_inline void permute(iScalar<vtype> &out,
|
|
const iScalar<vtype> &in, int permutetype) {
|
|
permute(out._internal, in._internal, permutetype);
|
|
}
|
|
friend strong_inline void rotate(iScalar<vtype> &out,const iScalar<vtype> &in,int rot){
|
|
rotate(out._internal,in._internal,rot);
|
|
}
|
|
friend strong_inline void exchange(iScalar<vtype> &out1,iScalar<vtype> &out2,
|
|
const iScalar<vtype> &in1,const iScalar<vtype> &in2,int type){
|
|
exchange(out1._internal,out2._internal,
|
|
in1._internal, in2._internal,type);
|
|
}
|
|
|
|
// Unary negation
|
|
friend strong_inline iScalar<vtype> operator-(const iScalar<vtype> &r) {
|
|
iScalar<vtype> ret;
|
|
ret._internal = -r._internal;
|
|
return ret;
|
|
}
|
|
// *=,+=,-= operators inherit from corresponding "*,-,+" behaviour
|
|
strong_inline iScalar<vtype> &operator*=(const iScalar<vtype> &r) {
|
|
*this = (*this) * r;
|
|
return *this;
|
|
}
|
|
strong_inline iScalar<vtype> &operator-=(const iScalar<vtype> &r) {
|
|
*this = (*this) - r;
|
|
return *this;
|
|
}
|
|
strong_inline iScalar<vtype> &operator+=(const iScalar<vtype> &r) {
|
|
*this = (*this) + r;
|
|
return *this;
|
|
}
|
|
strong_inline vtype &operator()(void) { return _internal; }
|
|
strong_inline const vtype &operator()(void) const { return _internal; }
|
|
|
|
// Type casts meta programmed, must be pure scalar to match TensorRemove
|
|
template <class U = vtype, class V = scalar_type, IfComplex<V> = 0,
|
|
IfNotSimd<U> = 0>
|
|
operator ComplexF() const {
|
|
return (TensorRemove(_internal));
|
|
};
|
|
template <class U = vtype, class V = scalar_type, IfComplex<V> = 0,
|
|
IfNotSimd<U> = 0>
|
|
operator ComplexD() const {
|
|
return (TensorRemove(_internal));
|
|
};
|
|
// template<class U=vtype,class V=scalar_type,IfComplex<V> = 0,IfNotSimd<U> =
|
|
// 0> operator RealD () const { return(real(TensorRemove(_internal))); }
|
|
template <class U = vtype, class V = scalar_type, IfReal<V> = 0,
|
|
IfNotSimd<U> = 0>
|
|
operator RealD() const {
|
|
return TensorRemove(_internal);
|
|
}
|
|
template <class U = vtype, class V = scalar_type, IfInteger<V> = 0,
|
|
IfNotSimd<U> = 0>
|
|
operator Integer() const {
|
|
return Integer(TensorRemove(_internal));
|
|
}
|
|
|
|
// convert from a something to a scalar via constructor of something arg
|
|
template <class T, typename std::enable_if<!isGridTensor<T>::value, T>::type
|
|
* = nullptr>
|
|
strong_inline iScalar<vtype> operator=(T arg) {
|
|
_internal = arg;
|
|
return *this;
|
|
}
|
|
|
|
friend std::ostream &operator<<(std::ostream &stream,
|
|
const iScalar<vtype> &o) {
|
|
stream << "S {" << o._internal << "}";
|
|
return stream;
|
|
};
|
|
};
|
|
///////////////////////////////////////////////////////////
|
|
// Allows to turn scalar<scalar<scalar<double>>>> back to double.
|
|
///////////////////////////////////////////////////////////
|
|
template <class T>
|
|
strong_inline typename std::enable_if<!isGridTensor<T>::value, T>::type
|
|
TensorRemove(T arg) {
|
|
return arg;
|
|
}
|
|
template <class vtype>
|
|
strong_inline auto TensorRemove(iScalar<vtype> arg)
|
|
-> decltype(TensorRemove(arg._internal)) {
|
|
return TensorRemove(arg._internal);
|
|
}
|
|
|
|
template <class vtype, int N>
|
|
class iVector {
|
|
public:
|
|
vtype _internal[N];
|
|
|
|
typedef vtype element;
|
|
typedef typename GridTypeMapper<vtype>::scalar_type scalar_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_type vector_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_typeD vector_typeD;
|
|
typedef typename GridTypeMapper<vtype>::tensor_reduced tensor_reduced_v;
|
|
typedef typename GridTypeMapper<vtype>::scalar_object recurse_scalar_object;
|
|
typedef iScalar<tensor_reduced_v> tensor_reduced;
|
|
typedef iVector<recurse_scalar_object, N> scalar_object;
|
|
|
|
// substitutes a real or complex version with same tensor structure
|
|
typedef iVector<typename GridTypeMapper<vtype>::Complexified, N> Complexified;
|
|
typedef iVector<typename GridTypeMapper<vtype>::Realified, N> Realified;
|
|
|
|
template <class T, typename std::enable_if<!isGridTensor<T>::value, T>::type
|
|
* = nullptr>
|
|
strong_inline auto operator=(T arg) -> iVector<vtype, N> {
|
|
zeroit(*this);
|
|
for (int i = 0; i < N; i++) _internal[i] = arg;
|
|
return *this;
|
|
}
|
|
|
|
enum { TensorLevel = GridTypeMapper<vtype>::TensorLevel + 1 };
|
|
iVector(const Zero &z) { *this = zero; };
|
|
iVector() = default;
|
|
/*
|
|
iVector(const iVector<vtype,N> ©me)=default;
|
|
iVector(iVector<vtype,N> &©me)=default;
|
|
iVector<vtype,N> & operator= (const iVector<vtype,N> ©me) = default;
|
|
iVector<vtype,N> & operator= (iVector<vtype,N> &©me) = default;
|
|
*/
|
|
|
|
iVector<vtype, N> &operator=(const Zero &hero) {
|
|
zeroit(*this);
|
|
return *this;
|
|
}
|
|
friend strong_inline void zeroit(iVector<vtype, N> &that) {
|
|
for (int i = 0; i < N; i++) {
|
|
zeroit(that._internal[i]);
|
|
}
|
|
}
|
|
friend strong_inline void prefetch(iVector<vtype, N> &that) {
|
|
for (int i = 0; i < N; i++) prefetch(that._internal[i]);
|
|
}
|
|
friend strong_inline void vstream(iVector<vtype, N> &out,
|
|
const iVector<vtype, N> &in) {
|
|
for (int i = 0; i < N; i++) {
|
|
vstream(out._internal[i], in._internal[i]);
|
|
}
|
|
}
|
|
friend strong_inline void vbroadcast(iVector<vtype,N> &out,const iVector<vtype,N> &in,int lane){
|
|
for(int i=0;i<N;i++){
|
|
vbroadcast(out._internal[i],in._internal[i],lane);
|
|
}
|
|
}
|
|
friend strong_inline void permute(iVector<vtype,N> &out,const iVector<vtype,N> &in,int permutetype){
|
|
for(int i=0;i<N;i++){
|
|
permute(out._internal[i],in._internal[i],permutetype);
|
|
}
|
|
}
|
|
friend strong_inline void rotate(iVector<vtype,N> &out,const iVector<vtype,N> &in,int rot){
|
|
for(int i=0;i<N;i++){
|
|
rotate(out._internal[i],in._internal[i],rot);
|
|
}
|
|
}
|
|
friend strong_inline void exchange(iVector<vtype,N> &out1,iVector<vtype,N> &out2,
|
|
const iVector<vtype,N> &in1,const iVector<vtype,N> &in2,int type){
|
|
for(int i=0;i<N;i++){
|
|
exchange(out1._internal[i],out2._internal[i],
|
|
in1._internal[i], in2._internal[i],type);
|
|
}
|
|
}
|
|
|
|
// Unary negation
|
|
friend strong_inline iVector<vtype, N> operator-(const iVector<vtype, N> &r) {
|
|
iVector<vtype, N> ret;
|
|
for (int i = 0; i < N; i++) ret._internal[i] = -r._internal[i];
|
|
return ret;
|
|
}
|
|
// *=,+=,-= operators inherit from corresponding "*,-,+" behaviour
|
|
strong_inline iVector<vtype, N> &operator*=(const iScalar<vtype> &r) {
|
|
*this = (*this) * r;
|
|
return *this;
|
|
}
|
|
strong_inline iVector<vtype, N> &operator-=(const iVector<vtype, N> &r) {
|
|
*this = (*this) - r;
|
|
return *this;
|
|
}
|
|
strong_inline iVector<vtype, N> &operator+=(const iVector<vtype, N> &r) {
|
|
*this = (*this) + r;
|
|
return *this;
|
|
}
|
|
strong_inline vtype &operator()(int i) { return _internal[i]; }
|
|
strong_inline const vtype &operator()(int i) const { return _internal[i]; }
|
|
friend std::ostream &operator<<(std::ostream &stream,
|
|
const iVector<vtype, N> &o) {
|
|
stream << "V<" << N << ">{";
|
|
for (int i = 0; i < N; i++) {
|
|
stream << o._internal[i];
|
|
if (i < N - 1) stream << ",";
|
|
}
|
|
stream << "}";
|
|
return stream;
|
|
};
|
|
// strong_inline vtype && operator ()(int i) {
|
|
// return _internal[i];
|
|
// }
|
|
};
|
|
|
|
template <class vtype, int N>
|
|
class iMatrix {
|
|
public:
|
|
vtype _internal[N][N];
|
|
|
|
typedef vtype element;
|
|
typedef typename GridTypeMapper<vtype>::scalar_type scalar_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_type vector_type;
|
|
typedef typename GridTypeMapper<vtype>::vector_typeD vector_typeD;
|
|
typedef typename GridTypeMapper<vtype>::tensor_reduced tensor_reduced_v;
|
|
typedef typename GridTypeMapper<vtype>::scalar_object recurse_scalar_object;
|
|
|
|
// substitutes a real or complex version with same tensor structure
|
|
typedef iMatrix<typename GridTypeMapper<vtype>::Complexified, N> Complexified;
|
|
typedef iMatrix<typename GridTypeMapper<vtype>::Realified, N> Realified;
|
|
|
|
// Tensure removal
|
|
typedef iScalar<tensor_reduced_v> tensor_reduced;
|
|
typedef iMatrix<recurse_scalar_object, N> scalar_object;
|
|
|
|
enum { TensorLevel = GridTypeMapper<vtype>::TensorLevel + 1 };
|
|
|
|
iMatrix(const Zero &z) { *this = zero; };
|
|
iMatrix() = default;
|
|
|
|
iMatrix &operator=(const iMatrix &rhs) {
|
|
for (int i = 0; i < N; i++)
|
|
for (int j = 0; j < N; j++) vstream(_internal[i][j], rhs._internal[i][j]);
|
|
return *this;
|
|
};
|
|
|
|
iMatrix(scalar_type s) {
|
|
(*this) = s;
|
|
}; // recurse down and hit the constructor for vector_type
|
|
|
|
/*
|
|
iMatrix(const iMatrix<vtype,N> ©me)=default;
|
|
iMatrix(iMatrix<vtype,N> &©me)=default;
|
|
iMatrix<vtype,N> & operator= (const iMatrix<vtype,N> ©me) = default;
|
|
iMatrix<vtype,N> & operator= (iMatrix<vtype,N> &©me) = default;
|
|
*/
|
|
|
|
iMatrix<vtype, N> &operator=(const Zero &hero) {
|
|
zeroit(*this);
|
|
return *this;
|
|
}
|
|
template <class T, typename std::enable_if<!isGridTensor<T>::value, T>::type
|
|
* = nullptr>
|
|
strong_inline auto operator=(T arg) -> iMatrix<vtype, N> {
|
|
zeroit(*this);
|
|
for (int i = 0; i < N; i++) _internal[i][i] = arg;
|
|
return *this;
|
|
}
|
|
|
|
friend strong_inline void zeroit(iMatrix<vtype,N> &that){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
zeroit(that._internal[i][j]);
|
|
}}
|
|
}
|
|
friend strong_inline void prefetch(iMatrix<vtype,N> &that){
|
|
for(int i=0;i<N;i++)
|
|
for(int j=0;j<N;j++)
|
|
prefetch(that._internal[i][j]);
|
|
}
|
|
friend strong_inline void vstream(iMatrix<vtype,N> &out,const iMatrix<vtype,N> &in){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
vstream(out._internal[i][j],in._internal[i][j]);
|
|
}}
|
|
}
|
|
friend strong_inline void vbroadcast(iMatrix<vtype,N> &out,const iMatrix<vtype,N> &in,int lane){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
vbroadcast(out._internal[i][j],in._internal[i][j],lane);
|
|
}}
|
|
}
|
|
|
|
friend strong_inline void permute(iMatrix<vtype,N> &out,const iMatrix<vtype,N> &in,int permutetype){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
permute(out._internal[i][j],in._internal[i][j],permutetype);
|
|
}}
|
|
}
|
|
friend strong_inline void rotate(iMatrix<vtype,N> &out,const iMatrix<vtype,N> &in,int rot){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
rotate(out._internal[i][j],in._internal[i][j],rot);
|
|
}}
|
|
}
|
|
friend strong_inline void exchange(iMatrix<vtype,N> &out1,iMatrix<vtype,N> &out2,
|
|
const iMatrix<vtype,N> &in1,const iMatrix<vtype,N> &in2,int type){
|
|
for(int i=0;i<N;i++){
|
|
for(int j=0;j<N;j++){
|
|
exchange(out1._internal[i][j],out2._internal[i][j],
|
|
in1._internal[i][j], in2._internal[i][j],type);
|
|
}}
|
|
}
|
|
|
|
// Unary negation
|
|
friend strong_inline iMatrix<vtype, N> operator-(const iMatrix<vtype, N> &r) {
|
|
iMatrix<vtype, N> ret;
|
|
for (int i = 0; i < N; i++) {
|
|
for (int j = 0; j < N; j++) {
|
|
ret._internal[i][j] = -r._internal[i][j];
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
// *=,+=,-= operators inherit from corresponding "*,-,+" behaviour
|
|
template <class T>
|
|
strong_inline iMatrix<vtype, N> &operator*=(const T &r) {
|
|
*this = (*this) * r;
|
|
return *this;
|
|
}
|
|
template <class T>
|
|
strong_inline iMatrix<vtype, N> &operator-=(const T &r) {
|
|
*this = (*this) - r;
|
|
return *this;
|
|
}
|
|
template <class T>
|
|
strong_inline iMatrix<vtype, N> &operator+=(const T &r) {
|
|
*this = (*this) + r;
|
|
return *this;
|
|
}
|
|
|
|
// returns an lvalue reference
|
|
strong_inline vtype &operator()(int i, int j) { return _internal[i][j]; }
|
|
strong_inline const vtype &operator()(int i, int j) const {
|
|
return _internal[i][j];
|
|
}
|
|
friend std::ostream &operator<<(std::ostream &stream,
|
|
const iMatrix<vtype, N> &o) {
|
|
stream << "M<" << N << ">{";
|
|
for (int i = 0; i < N; i++) {
|
|
stream << "{";
|
|
for (int j = 0; j < N; j++) {
|
|
stream << o._internal[i][j];
|
|
if (i < N - 1) stream << ",";
|
|
}
|
|
stream << "}";
|
|
if (i != N - 1) stream << "\n\t\t";
|
|
}
|
|
stream << "}";
|
|
return stream;
|
|
};
|
|
|
|
// strong_inline vtype && operator ()(int i,int j) {
|
|
// return _internal[i][j];
|
|
// }
|
|
};
|
|
|
|
template <class v>
|
|
void vprefetch(const iScalar<v> &vv) {
|
|
vprefetch(vv._internal);
|
|
}
|
|
template <class v, int N>
|
|
void vprefetch(const iVector<v, N> &vv) {
|
|
for (int i = 0; i < N; i++) {
|
|
vprefetch(vv._internal[i]);
|
|
}
|
|
}
|
|
template <class v, int N>
|
|
void vprefetch(const iMatrix<v, N> &vv) {
|
|
for (int i = 0; i < N; i++) {
|
|
for (int j = 0; j < N; j++) {
|
|
vprefetch(vv._internal[i][j]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|