1 /* 2 3 This file is part of the Maude 2 interpreter. 4 5 Copyright 1997-2003 SRI International, Menlo Park, CA 94025, USA. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 20 21 */ 22 23 // 24 // Class for symbols for built in operations on floating point numbers. 25 // 26 #ifndef _FloatOpSymbol_hh_ 27 #define _FloatOpSymbol_hh_ 28 #include "freeSymbol.hh" 29 #include "cachedDag.hh" 30 31 class FloatOpSymbol : public FreeSymbol 32 { 33 public: 34 FloatOpSymbol(int id, int arity); 35 36 bool attachData(const Vector<Sort*>& opDeclaration, 37 const char* purpose, 38 const Vector<const char*>& data); 39 bool attachSymbol(const char* purpose, Symbol* symbol); 40 bool attachTerm(const char* purpose, Term* term); 41 void copyAttachments(Symbol* original, SymbolMap* map); 42 void getDataAttachments(const Vector<Sort*>& opDeclaration, 43 Vector<const char*>& purposes, 44 Vector<Vector<const char*> >& data); 45 void getSymbolAttachments(Vector<const char*>& purposes, 46 Vector<Symbol*>& symbols); 47 void getTermAttachments(Vector<const char*>& purposes, 48 Vector<Term*>& terms); 49 50 void postInterSymbolPass(); 51 void reset(); 52 bool eqRewrite(DagNode* subject, RewritingContext& context); 53 54 private: 55 int isOdd(double n); 56 double safePow(double a1, double a2, bool& defined); 57 58 int op; 59 FloatSymbol* floatSymbol; 60 SuccSymbol* succSymbol; 61 MinusSymbol* minusSymbol; 62 DivisionSymbol* divisionSymbol; 63 CachedDag trueTerm; 64 CachedDag falseTerm; 65 }; 66 67 #endif 68