[493c477] | 1 | /* emacs edit mode for this file is -*- C++ -*- */ |
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| 2 | /* $Id: variable.h,v 1.3 1997-06-19 12:21:49 schmidt Exp $ */ |
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[2dd068] | 3 | |
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| 4 | #ifndef INCL_VARIABLE_H |
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| 5 | #define INCL_VARIABLE_H |
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| 6 | |
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[037633] | 7 | #include <config.h> |
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| 8 | |
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[175e355] | 9 | #ifndef NOSTREAMIO |
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[2dd068] | 10 | #include <iostream.h> |
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[175e355] | 11 | #endif /* NOSTREAMIO */ |
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[2dd068] | 12 | |
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| 13 | #include "cf_defs.h" |
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| 14 | |
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| 15 | /*BEGINPUBLIC*/ |
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| 16 | |
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| 17 | class CanonicalForm; |
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| 18 | |
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| 19 | class Variable |
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| 20 | { |
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| 21 | private: |
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| 22 | int _level; |
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| 23 | Variable( int l, bool flag ); |
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| 24 | public: |
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| 25 | Variable() : _level(LEVELBASE) {} |
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| 26 | Variable( int l ); |
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| 27 | Variable( char name ); |
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| 28 | Variable( int l, char name ); |
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| 29 | Variable( const Variable & v ) : _level(v._level) {} |
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| 30 | ~Variable() {}; |
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| 31 | Variable& operator= ( const Variable & v ) |
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| 32 | { |
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| 33 | _level = v._level; |
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| 34 | return *this; |
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| 35 | } |
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| 36 | int level() const { return _level; } |
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| 37 | char name() const; |
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| 38 | static Variable highest() { return Variable( LEVELQUOT-1 ); } |
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| 39 | Variable next() const { return Variable( _level+1 ); } |
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| 40 | friend bool operator == ( const Variable & lhs, const Variable & rhs ) |
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| 41 | { |
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| 42 | return lhs._level == rhs._level; |
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| 43 | } |
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| 44 | friend bool operator != ( const Variable & lhs, const Variable & rhs ) |
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| 45 | { |
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| 46 | return lhs._level != rhs._level; |
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| 47 | } |
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| 48 | friend bool operator > ( const Variable & lhs, const Variable & rhs ) |
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| 49 | { |
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| 50 | return lhs._level > rhs._level; |
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| 51 | } |
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| 52 | friend bool operator < ( const Variable & lhs, const Variable & rhs ) |
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| 53 | { |
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| 54 | return lhs._level < rhs._level; |
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| 55 | } |
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| 56 | friend bool operator >= ( const Variable & lhs, const Variable & rhs ) |
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| 57 | { |
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| 58 | return lhs._level >= rhs._level; |
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| 59 | } |
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| 60 | friend bool operator <= ( const Variable & lhs, const Variable & rhs ) |
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| 61 | { |
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| 62 | return lhs._level <= rhs._level; |
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| 63 | } |
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[175e355] | 64 | #ifndef NOSTREAMIO |
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[2dd068] | 65 | friend ostream & operator << ( ostream & os, const Variable & v ); |
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[175e355] | 66 | #endif /* NOSTREAMIO */ |
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[2dd068] | 67 | friend Variable rootOf( const CanonicalForm &, char name = '@' ); |
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| 68 | }; |
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| 69 | |
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| 70 | inline int level( const Variable & v ) { return v.level(); } |
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| 71 | inline char name( const Variable & v ) { return v.name(); } |
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| 72 | |
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| 73 | CanonicalForm getMipo( const Variable & alpha, const Variable & x ); |
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| 74 | |
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| 75 | char getDefaultVarName(); |
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| 76 | char getDefaultExtName(); |
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| 77 | |
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| 78 | /*ENDPUBLIC*/ |
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| 79 | |
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| 80 | // the following functions do not need to be public available |
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| 81 | CanonicalForm getMipo( const Variable & alpha ); |
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| 82 | class InternalPoly; |
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| 83 | InternalPoly * getInternalMipo ( const Variable & alpha ); |
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| 84 | bool getReduce( const Variable & alpha ); |
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| 85 | void setReduce( const Variable & alpha, bool reduce ); |
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| 86 | |
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[493c477] | 87 | #endif /* ! INCL_VARIABLE_H */ |
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