PLearn 0.1
ConstantVMatrix.cc
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00001 // -*- C++ -*-
00002 
00003 // ConstantVMatrix.cc
00004 //
00005 // Copyright (C) 2005 Nicolas Chapados
00006 //
00007 // Redistribution and use in source and binary forms, with or without
00008 // modification, are permitted provided that the following conditions are met:
00009 //
00010 //  1. Redistributions of source code must retain the above copyright
00011 //     notice, this list of conditions and the following disclaimer.
00012 //
00013 //  2. Redistributions in binary form must reproduce the above copyright
00014 //     notice, this list of conditions and the following disclaimer in the
00015 //     documentation and/or other materials provided with the distribution.
00016 //
00017 //  3. The name of the authors may not be used to endorse or promote
00018 //     products derived from this software without specific prior written
00019 //     permission.
00020 //
00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 //
00032 // This file is part of the PLearn library. For more information on the PLearn
00033 // library, go to the PLearn Web site at www.plearn.org
00034 
00035 /* *******************************************************
00036  * $Id: .pyskeleton_header 544 2003-09-01 00:05:31Z plearner $
00037  ******************************************************* */
00038 
00039 // Authors: Nicolas Chapados
00040 
00043 #include "ConstantVMatrix.h"
00044 
00045 namespace PLearn {
00046 using namespace std;
00047 
00048 PLEARN_IMPLEMENT_OBJECT(
00049     ConstantVMatrix,
00050     "VMatrix that returns a constant element.",
00051     "This VMatrix returns a constant element (specified upon construction\n"
00052     "through the constant_output option)");
00053 
00054 ConstantVMatrix::ConstantVMatrix()
00055     : inherited(), constant_output(MISSING_VALUE)
00056 { }
00057 
00058 ConstantVMatrix::ConstantVMatrix(int the_length, int the_width, real constant)
00059     : inherited(the_length, the_width), constant_output(constant)
00060 { }
00061 
00063 // declareOptions //
00065 void ConstantVMatrix::declareOptions(OptionList& ol)
00066 {
00067     declareOption(ol, "constant_output", &ConstantVMatrix::constant_output,
00068                   OptionBase::buildoption,
00069                   "The constant output to return");
00070 
00071     // Now call the parent class' declareOptions
00072     inherited::declareOptions(ol);
00073 }
00074 
00076 // build //
00078 void ConstantVMatrix::build()
00079 {
00080     inherited::build();
00081     build_();
00082 }
00083 
00085 // build_ //
00087 void ConstantVMatrix::build_()
00088 {
00089     computeMissingSizeValue(false);
00090 }
00091 
00093 // get //
00095 real ConstantVMatrix::get(int i, int j) const
00096 {
00097     return constant_output;
00098 }
00099 
00101 // getSubRow //
00103 void ConstantVMatrix::getSubRow(int i, int j, Vec v) const
00104 {
00105     v.fill(constant_output);
00106 }
00107 
00109 // makeDeepCopyFromShallowCopy //
00111 void ConstantVMatrix::makeDeepCopyFromShallowCopy(CopiesMap& copies)
00112 {
00113     inherited::makeDeepCopyFromShallowCopy(copies);
00114 }
00115 
00116 } // end of namespace PLearn
00117 
00118 
00119 /*
00120   Local Variables:
00121   mode:c++
00122   c-basic-offset:4
00123   c-file-style:"stroustrup"
00124   c-file-offsets:((innamespace . 0)(inline-open . 0))
00125   indent-tabs-mode:nil
00126   fill-column:79
00127   End:
00128 */
00129 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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