PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal 00006 // Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal 00007 // Copyright (C) 2002 Xiangdong Wang, Christian Dorion 00008 00009 // Redistribution and use in source and binary forms, with or without 00010 // modification, are permitted provided that the following conditions are met: 00011 // 00012 // 1. Redistributions of source code must retain the above copyright 00013 // notice, this list of conditions and the following disclaimer. 00014 // 00015 // 2. Redistributions in binary form must reproduce the above copyright 00016 // notice, this list of conditions and the following disclaimer in the 00017 // documentation and/or other materials provided with the distribution. 00018 // 00019 // 3. The name of the authors may not be used to endorse or promote 00020 // products derived from this software without specific prior written 00021 // permission. 00022 // 00023 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00024 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00025 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00026 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00027 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00028 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00029 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00030 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00031 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00032 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00033 // 00034 // This file is part of the PLearn library. For more information on the PLearn 00035 // library, go to the PLearn Web site at www.plearn.org 00036 00037 00038 /* ******************************************************* 00039 * $Id: IfThenElseVariable.h 5876 2006-06-15 14:24:49Z chapados $ 00040 * This file is part of the PLearn library. 00041 ******************************************************* */ 00042 00043 #ifndef IfThenElseVariable_INC 00044 #define IfThenElseVariable_INC 00045 00046 #include "NaryVariable.h" 00047 00048 namespace PLearn { 00049 using namespace std; 00050 00051 00058 class IfThenElseVariable: public NaryVariable 00059 { 00060 typedef NaryVariable inherited; 00061 00062 public: 00064 IfThenElseVariable() {} 00065 IfThenElseVariable(Var IfVar, Var ThenVar, Var ElseVar); 00066 00067 PLEARN_DECLARE_OBJECT(IfThenElseVariable); 00068 00069 virtual void build(); 00070 00071 virtual void recomputeSize(int& l, int& w) const; 00072 virtual void fprop(); 00073 virtual void bprop(); 00074 virtual void symbolicBprop(); 00075 virtual void rfprop(); 00076 Var& If() { return varray[0]; } 00077 Var& Then() { return varray[1]; } 00078 Var& Else() { return varray[2]; } 00079 00080 protected: 00081 void build_(); 00082 }; 00083 00084 DECLARE_OBJECT_PTR(IfThenElseVariable); 00085 00087 inline Var ifThenElse(Var If, Var Then, Var Else) 00088 { return new IfThenElseVariable(If,Then,Else); } 00089 00090 } // end of namespace PLearn 00091 00092 #endif 00093 00094 00095 /* 00096 Local Variables: 00097 mode:c++ 00098 c-basic-offset:4 00099 c-file-style:"stroustrup" 00100 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00101 indent-tabs-mode:nil 00102 fill-column:79 00103 End: 00104 */ 00105 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :