PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 2004 Jasmin Lapalme 00005 00006 // Redistribution and use in source and binary forms, with or without 00007 // modification, are permitted provided that the following conditions are met: 00008 // 00009 // 1. Redistributions of source code must retain the above copyright 00010 // notice, this list of conditions and the following disclaimer. 00011 // 00012 // 2. Redistributions in binary form must reproduce the above copyright 00013 // notice, this list of conditions and the following disclaimer in the 00014 // documentation and/or other materials provided with the distribution. 00015 // 00016 // 3. The name of the authors may not be used to endorse or promote 00017 // products derived from this software without specific prior written 00018 // permission. 00019 // 00020 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00021 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00022 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00023 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00024 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00025 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00026 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00027 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00028 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00029 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 // 00031 // This file is part of the PLearn library. For more information on the PLearn 00032 // library, go to the PLearn Web site at www.plearn.org 00033 00034 #ifndef IdentityVariable_INC 00035 #define IdentityVariable_INC 00036 00037 #include "UnaryVariable.h" 00038 00039 namespace PLearn { 00040 using namespace std; 00041 00042 class IdentityVariable: public UnaryVariable { 00043 typedef UnaryVariable inherited; 00044 00045 public: 00047 IdentityVariable() {} 00048 IdentityVariable(Variable* input); 00049 00050 PLEARN_DECLARE_OBJECT(IdentityVariable); 00051 00052 virtual void recomputeSize(int& l, int& w) const; 00053 virtual void fprop(); 00054 virtual void bprop(); 00055 virtual void bbprop(); 00056 virtual void symbolicBprop(); 00057 virtual void rfprop(); 00058 inline void setInput(Var the_input){ input = the_input;} 00059 }; 00060 00061 DECLARE_OBJECT_PTR(IdentityVariable); 00062 00063 inline Var iden(Var v) 00064 { return new IdentityVariable(v); } 00065 00066 } // end of namespace PLearn 00067 00068 #endif 00069 00070 00071 /* 00072 Local Variables: 00073 mode:c++ 00074 c-basic-offset:4 00075 c-file-style:"stroustrup" 00076 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00077 indent-tabs-mode:nil 00078 fill-column:79 00079 End: 00080 */ 00081 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :