X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fclifford.cpp;h=07da693545580a59f73a12a0fb192b5de7878ce7;hp=c93e6466d092b06a9cd3aeb7aeb95b70c9bc0fc7;hb=e342f91c239e89839fdbe643957595b5f598c628;hpb=b60ef16e9be16480499da701216b4a5081ee9a97 diff --git a/ginac/clifford.cpp b/ginac/clifford.cpp index c93e6466..07da6935 100644 --- a/ginac/clifford.cpp +++ b/ginac/clifford.cpp @@ -3,7 +3,7 @@ * Implementation of GiNaC's clifford algebra (Dirac gamma) objects. */ /* - * GiNaC Copyright (C) 1999-2007 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2008 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 @@ -46,8 +46,6 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(clifford, indexed, print_func(&clifford::do_print_dflt). print_func(&clifford::do_print_latex)) -const tinfo_static_t clifford::return_type_tinfo_static[256] = {{}}; - GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(diracone, tensor, print_func(&diracone::do_print). print_func(&diracone::do_print_latex)) @@ -78,7 +76,6 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(diracgammaR, tensor, clifford::clifford() : representation_label(0), metric(0), commutator_sign(-1) { - tinfo_key = &clifford::tinfo_static; } DEFAULT_CTOR(diracone) @@ -97,7 +94,6 @@ DEFAULT_CTOR(diracgammaR) * @see dirac_ONE */ clifford::clifford(const ex & b, unsigned char rl) : inherited(b), representation_label(rl), metric(0), commutator_sign(-1) { - tinfo_key = &clifford::tinfo_static; } /** Construct object with one Lorentz index. This constructor is for internal @@ -107,25 +103,28 @@ clifford::clifford(const ex & b, unsigned char rl) : inherited(b), representatio clifford::clifford(const ex & b, const ex & mu, const ex & metr, unsigned char rl, int comm_sign) : inherited(b, mu), representation_label(rl), metric(metr), commutator_sign(comm_sign) { GINAC_ASSERT(is_a(mu)); - tinfo_key = &clifford::tinfo_static; } clifford::clifford(unsigned char rl, const ex & metr, int comm_sign, const exvector & v, bool discardable) : inherited(not_symmetric(), v, discardable), representation_label(rl), metric(metr), commutator_sign(comm_sign) { - tinfo_key = &clifford::tinfo_static; } clifford::clifford(unsigned char rl, const ex & metr, int comm_sign, std::auto_ptr vp) : inherited(not_symmetric(), vp), representation_label(rl), metric(metr), commutator_sign(comm_sign) { - tinfo_key = &clifford::tinfo_static; +} + +return_type_t clifford::return_type_tinfo() const +{ + return make_return_type_t(representation_label); } ////////// // archiving ////////// -clifford::clifford(const archive_node & n, lst & sym_lst) : inherited(n, sym_lst) +void clifford::read_archive(const archive_node& n, lst& sym_lst) { + inherited::read_archive(n, sym_lst); unsigned rl; n.find_unsigned("label", rl); representation_label = rl; @@ -142,13 +141,12 @@ void clifford::archive(archive_node & n) const n.add_unsigned("commutator_sign+1", commutator_sign+1); } -DEFAULT_UNARCHIVE(clifford) -DEFAULT_ARCHIVING(diracone) -DEFAULT_ARCHIVING(cliffordunit) -DEFAULT_ARCHIVING(diracgamma) -DEFAULT_ARCHIVING(diracgamma5) -DEFAULT_ARCHIVING(diracgammaL) -DEFAULT_ARCHIVING(diracgammaR) +GINAC_BIND_UNARCHIVER(clifford); +GINAC_BIND_UNARCHIVER(diracone); +GINAC_BIND_UNARCHIVER(diracgamma); +GINAC_BIND_UNARCHIVER(diracgamma5); +GINAC_BIND_UNARCHIVER(diracgammaL); +GINAC_BIND_UNARCHIVER(diracgammaR); ex clifford::get_metric(const ex & i, const ex & j, bool symmetrised) const @@ -716,9 +714,21 @@ ex dirac_ONE(unsigned char rl) return clifford(ONE, rl); } +static unsigned get_dim_uint(const ex& e) +{ + if (!is_a(e)) + throw std::invalid_argument("get_dim_uint: argument is not an index"); + ex dim = ex_to(e).get_dim(); + if (!dim.info(info_flags::posint)) + throw std::invalid_argument("get_dim_uint: dimension of index should be a positive integer"); + unsigned d = ex_to(dim).to_int(); + return d; +} + ex clifford_unit(const ex & mu, const ex & metr, unsigned char rl) { - static ex unit = (new cliffordunit)->setflag(status_flags::dynallocated); + //static ex unit = (new cliffordunit)->setflag(status_flags::dynallocated); + ex unit = (new cliffordunit)->setflag(status_flags::dynallocated); if (!is_a(mu)) throw(std::invalid_argument("clifford_unit(): index of Clifford unit must be of type idx or varidx")); @@ -732,12 +742,14 @@ ex clifford_unit(const ex & mu, const ex & metr, unsigned char rl) unsigned n = M.rows(); bool symmetric = true; - static idx xi((new symbol)->setflag(status_flags::dynallocated), n), + //static idx xi((new symbol)->setflag(status_flags::dynallocated), n), + // chi((new symbol)->setflag(status_flags::dynallocated), n); + idx xi((new symbol)->setflag(status_flags::dynallocated), n), chi((new symbol)->setflag(status_flags::dynallocated), n); - if ((n == M.cols()) && (n == ex_to(mu).get_dim())) { + if ((n == M.cols()) && (n == get_dim_uint(mu))) { for (unsigned i = 0; i < n; i++) { for (unsigned j = i+1; j < n; j++) { - if (M(i, j) != M(j, i)) { + if (!M(i, j).is_equal(M(j, i))) { symmetric = false; } } @@ -747,7 +759,9 @@ ex clifford_unit(const ex & mu, const ex & metr, unsigned char rl) throw(std::invalid_argument("clifford_unit(): metric for Clifford unit must be a square matrix with the same dimensions as index")); } } else if (indices.size() == 0) { // a tensor or other expression without indices - static varidx xi((new symbol)->setflag(status_flags::dynallocated), ex_to(mu).get_dim()), + //static varidx xi((new symbol)->setflag(status_flags::dynallocated), ex_to(mu).get_dim()), + // chi((new symbol)->setflag(status_flags::dynallocated), ex_to(mu).get_dim()); + varidx xi((new symbol)->setflag(status_flags::dynallocated), ex_to(mu).get_dim()), chi((new symbol)->setflag(status_flags::dynallocated), ex_to(mu).get_dim()); return clifford(unit, mu, indexed(metr, xi, chi), rl); } else @@ -795,19 +809,11 @@ ex dirac_slash(const ex & e, const ex & dim, unsigned char rl) return clifford(e, varidx(0, dim), indexed((new minkmetric)->setflag(status_flags::dynallocated), symmetric2(), xi, chi), rl); } -/** Check whether a given tinfo key (as returned by return_type_tinfo() - * is that of a clifford object (with an arbitrary representation label). */ -bool is_clifford_tinfo(tinfo_t ti) -{ - p_int start_loc=(p_int)&clifford::return_type_tinfo_static; - return (p_int)ti>=start_loc && (p_int)ti(mu) ? ex_to(mu).toggle_variance() : mu; - unsigned dim = (ex_to(ex_to(mu).get_dim())).to_int(); + unsigned dim = get_dim_uint(mu); if (is_a(v)) { if (ex_to(v).cols() > ex_to(v).rows()) {