/usr/include/eclib/splitbase.h is in libec-dev 2013-01-01-1.
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 | // splitbase.h: Declaration of class splitter_base
//////////////////////////////////////////////////////////////////////////
//
// Copyright 1990-2012 John Cremona
//
// This file is part of the mwrank package.
//
// mwrank 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.
//
// mwrank 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 mwrank; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//
//////////////////////////////////////////////////////////////////////////
#if !defined(_SPLITBASE_H)
#define _SPLITBASE_H 1 //flags that this file has been included
// The following class must be a base class of any class wishing to
// use the form_finder class; the using class must implement some or
// all of these virtual functions before creating a form_finder with
// "this" as first parameter in the constructor:
//
// In all cases implement opmat, matdim, matden, use; implement eigrange
// iff you are going to use the recursive search function find()
//
// opmat(i) returns the i'th operator for i>=0; opmat(-1) should return
// the conjugation matrix in the case where target dimension is 2 (i.e.
// plusflag=0) and basis vectors bplus, bminus are required.
//
// matdim() returns the size of the matrices, i.e. dimension of ambient space
//
// matden() returns the implicit denominator of all matrices, needed to scale
// eigenvalues
//
// eigrange(i) returns a list of possible eigenvalues for opmat(i)
//
// use(basis1, basis2, eiglist) provides whatever processing is done with the
// 1-dimensional eigenspaces as found.
// (basis2 will not be used when plusflag=1)
class splitter_base {
public:
virtual mat opmat(int,int,int=0) = 0;
virtual mat opmat_restricted(int,const subspace& s, int,int=0) = 0;
virtual smat s_opmat(int,int,int=0) = 0;
virtual smat s_opmat_restricted(int,const ssubspace& s, int, int=0) = 0;
virtual long matdim(void) = 0;
virtual long matden(void) = 0;
virtual vector<long> eigrange(int) = 0;
virtual long dimoldpart(const vector<long>) = 0;
virtual void use(const vec&, const vec&, const vector<long>) = 0;
virtual ~splitter_base() {;}
};
#endif
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