X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;ds=sidebyside;f=ginac%2Ftensor.h;h=42dadb9d6ade481f1c2b4227d04ec1ff829c74ab;hb=c3195f0b5a7ac9fdbfdd04e5f4acf6a836063de0;hp=0ebfb0f56d76b93633c8a635d30c20e2cf763982;hpb=ea5d361d94e49ca3f3b73db8c9812ee519f0633f;p=ginac.git diff --git a/ginac/tensor.h b/ginac/tensor.h index 0ebfb0f5..42dadb9d 100644 --- a/ginac/tensor.h +++ b/ginac/tensor.h @@ -3,7 +3,7 @@ * Interface to GiNaC's special tensors. */ /* - * GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2021 Johannes Gutenberg University Mainz, Germany * * 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 @@ -20,14 +20,14 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#ifndef __GINAC_TENSOR_H__ -#define __GINAC_TENSOR_H__ +#ifndef GINAC_TENSOR_H +#define GINAC_TENSOR_H #include "ex.h" +#include "archive.h" namespace GiNaC { - /** This class holds one of GiNaC's predefined special tensors such as the * delta and the metric tensors. They are represented without indices. * To attach indices to them, wrap them in an object of class indexed. */ @@ -35,13 +35,9 @@ class tensor : public basic { GINAC_DECLARE_REGISTERED_CLASS(tensor, basic) - // other constructors -protected: - tensor(unsigned ti) : inherited(ti) {} - // functions overriding virtual functions from base classes protected: - unsigned return_type() const { return return_types::noncommutative_composite; } + unsigned return_type() const override { return return_types::noncommutative_composite; } // non-virtual functions in this class public: @@ -60,15 +56,18 @@ class tensdelta : public tensor // functions overriding virtual functions from base classes public: - ex eval_indexed(const basic & i) const; - bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const; + bool info(unsigned inf) const override; + ex eval_indexed(const basic & i) const override; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; +protected: + unsigned return_type() const override { return return_types::commutative; } // non-virtual functions in this class protected: - unsigned return_type() const { return return_types::commutative; } void do_print(const print_context & c, unsigned level) const; void do_print_latex(const print_latex & c, unsigned level) const; }; +GINAC_DECLARE_UNARCHIVER(tensdelta); /** This class represents a general metric tensor which can be used to @@ -80,14 +79,17 @@ class tensmetric : public tensor // functions overriding virtual functions from base classes public: - ex eval_indexed(const basic & i) const; - bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const; + bool info(unsigned inf) const override; + ex eval_indexed(const basic & i) const override; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; +protected: + unsigned return_type() const override { return return_types::commutative; } // non-virtual functions in this class protected: - unsigned return_type() const { return return_types::commutative; } void do_print(const print_context & c, unsigned level) const; }; +GINAC_DECLARE_UNARCHIVER(tensmetric); /** This class represents a Minkowski metric tensor. It has all the @@ -104,11 +106,18 @@ public: // functions overriding virtual functions from base classes public: - ex eval_indexed(const basic & i) const; + bool info(unsigned inf) const override; + ex eval_indexed(const basic & i) const override; + + /** Save (a.k.a. serialize) object into archive. */ + void archive(archive_node& n) const override; + /** Read (a.k.a. deserialize) object from archive. */ + void read_archive(const archive_node& n, lst& syms) override; +protected: + unsigned return_type() const override { return return_types::commutative; } // non-virtual functions in this class protected: - unsigned return_type() const { return return_types::commutative; } void do_print(const print_context & c, unsigned level) const; void do_print_latex(const print_latex & c, unsigned level) const; @@ -116,6 +125,7 @@ protected: private: bool pos_sig; /**< If true, the metric is diag(-1,1,1...). Otherwise it is diag(1,-1,-1,...). */ }; +GINAC_DECLARE_UNARCHIVER(minkmetric); /** This class represents an antisymmetric spinor metric tensor which @@ -128,14 +138,15 @@ class spinmetric : public tensmetric // functions overriding virtual functions from base classes public: - ex eval_indexed(const basic & i) const; - bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const; + bool info(unsigned inf) const override; + ex eval_indexed(const basic & i) const override; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; - // non-virtual functions in this class protected: void do_print(const print_context & c, unsigned level) const; void do_print_latex(const print_latex & c, unsigned level) const; }; +GINAC_DECLARE_UNARCHIVER(spinmetric); /** This class represents the totally antisymmetric epsilon tensor. If @@ -151,12 +162,19 @@ public: // functions overriding virtual functions from base classes public: - ex eval_indexed(const basic & i) const; - bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const; + bool info(unsigned inf) const override; + ex eval_indexed(const basic & i) const override; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; + + /** Save (a.k.a. serialize) object into archive. */ + void archive(archive_node& n) const override; + /** Read (a.k.a. deserialize) object from archive. */ + void read_archive(const archive_node& n, lst& syms) override; +protected: + unsigned return_type() const override { return return_types::commutative; } // non-virtual functions in this class protected: - unsigned return_type() const { return return_types::commutative; } void do_print(const print_context & c, unsigned level) const; void do_print_latex(const print_latex & c, unsigned level) const; @@ -165,6 +183,7 @@ private: bool minkowski; /**< If true, tensor is in Minkowski-type space. Otherwise it is in a Euclidean space. */ bool pos_sig; /**< If true, the metric is assumed to be diag(-1,1,1...). Otherwise it is diag(1,-1,-1,...). This is only relevant if minkowski = true. */ }; +GINAC_DECLARE_UNARCHIVER(tensepsilon); // utility functions @@ -238,4 +257,4 @@ ex lorentz_eps(const ex & i1, const ex & i2, const ex & i3, const ex & i4, bool } // namespace GiNaC -#endif // ndef __GINAC_TENSOR_H__ +#endif // ndef GINAC_TENSOR_H