/usr/include/eclib/xsplit.h is in libec-dev 20160101-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | // xsplit.h: Declaration of class form_finder
//////////////////////////////////////////////////////////////////////////
//
// Copyright 1990-2012 John Cremona
// Marcus Mo (parallel code)
//
// This file is part of the eclib package.
//
// eclib 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.
//
// eclib 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 eclib; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//
//////////////////////////////////////////////////////////////////////////
#if !defined(_XSPLIT_H)
#define _XSPLIT_H 1 //flags that this file has been included
// Disable multithreading
// #undef ECLIB_MULTITHREAD
#ifdef ECLIB_MULTITHREAD
#include <boost/thread/mutex.hpp>
#endif
#include "method.h" // #defines form_finder=form_finder0/1/2/3/4
#include "splitbase.h"
#include "xsplit_data.h"
#ifdef ECLIB_MULTITHREAD
#include "threadpool.h"
#endif
// flags set on construction:
// dual: use dual bases throughout (the usual case)
// plusflag: if 1 then targetdim=1 and conjmat not used
// if 0 then targetdim=2 and conjmat is used
// bigmats: if 1 then uses opmat() to get operators on ambient space,
// does its own restriction to the current subspace; if 0 then uses
// opmat_restricted() to get operators restricted to current space
// directly -- ONLY possible when dual=1
class form_finder {
public:
form_finder(splitter_base* hh, int plus, int maxd, int mind=0,
int dualflag=1, int bigmatsflag=0, int v=0);
~form_finder(void);
void find();
void find(ff_data &data);
void recover(vector< vector<long> > eigs);
void splitoff(const vector<long>& eigs);
void store(vec bp, vec bm, vector<long> eigs);
vec getbasis( ff_data &data ) const {return data.bplus_;}
vec getbasisplus( ff_data &data ) const {return data.bplus_;}
vec getbasisminus( ff_data &data ) const {return data.bminus_;}
friend class ff_data;
protected:
splitter_base* h;
int plusflag, dual, bigmats, verbose, targetdim;
int gnfcount; // Global newform counter
long maxdepth, mindepth, dimen;
SCALAR denom1;
vector< vector<long> > gaplist; // Vector to hold all (sub)eiglists
vector<vec> gbplus, gbminus; // Vector to hold all bplus/bminus
ff_data* root; // Always points to root data node
void make_opmat(long i, ff_data &data); // Puts it in the_opmat
void make_submat(ff_data &data);
smat make_nested_submat(long ip, ff_data &data);
void go_down(ff_data &data, long eig, int last=0);
void go_up( ff_data &data );
void make_basis(ff_data &data);
vec make_basis1(ff_data &data); // current space has dim. 1
vec make_basis2(ff_data &data, const vec& v); // current space has dim. >1 and
// relative basis vector v
#ifdef ECLIB_MULTITHREAD
threadpool pool; // Job queue
boost::mutex store_lock; // Lock for store() function
#endif
};
vec getbasis1(const ssubspace* s); // Assuming dim(s)=1, get basis vector
vec lift(const vec& v); // Lift basis vector
#endif
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