* Interface to GiNaC's ABC. */
/*
- * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __GINAC_BASIC_H__
#include <algorithm>
#include "flags.h"
-#include "tinfos.h"
#include "ptr.h"
#include "assertion.h"
#include "registrar.h"
typedef std::vector<ex> exvector;
typedef std::map<ex, ex, ex_is_less> exmap;
+// Define this to enable some statistical output for comparisons and hashing
+#undef GINAC_COMPARE_STATISTICS
+
+#ifdef GINAC_COMPARE_STATISTICS
+class compare_statistics_t {
+public:
+ compare_statistics_t()
+ : total_compares(0), nontrivial_compares(0), total_basic_compares(0), compare_same_hashvalue(0), compare_same_type(0),
+ total_is_equals(0), nontrivial_is_equals(0), total_basic_is_equals(0), is_equal_same_hashvalue(0), is_equal_same_type(0),
+ total_gethash(0), gethash_cached(0) {}
+ ~compare_statistics_t();
+
+ unsigned long total_compares;
+ unsigned long nontrivial_compares;
+ unsigned long total_basic_compares;
+ unsigned long compare_same_hashvalue;
+ unsigned long compare_same_type;
+
+ unsigned long total_is_equals;
+ unsigned long nontrivial_is_equals;
+ unsigned long total_basic_is_equals;
+ unsigned long is_equal_same_hashvalue;
+ unsigned long is_equal_same_type;
+
+ unsigned long total_gethash;
+ unsigned long gethash_cached;
+};
+
+extern compare_statistics_t compare_statistics;
+#endif
+
/** Function object for map(). */
struct map_function {
+ virtual ~map_function() {}
typedef const ex & argument_type;
typedef ex result_type;
virtual ex operator()(const ex & e) = 0;
// default constructor, destructor, copy constructor and assignment operator
protected:
- basic() : tinfo_key(TINFO_basic), flags(0) {}
+ basic() : tinfo_key(&tinfo_static), flags(0) {}
public:
/** basic destructor, virtual because class ex will delete objects of
protected:
/** Constructor with specified tinfo_key (used by derived classes instead
* of the default constructor to avoid assigning tinfo_key twice). */
- basic(unsigned ti) : tinfo_key(ti), flags(0) {}
+ basic(tinfo_t ti) : tinfo_key(ti), flags(0) {}
// new virtual functions which can be overridden by derived classes
public: // only const functions please (may break reference counting)
virtual ex eval(int level = 0) const;
virtual ex evalf(int level = 0) const;
virtual ex evalm() const;
+ virtual ex eval_integ() const;
protected:
virtual ex eval_ncmul(const exvector & v) const;
public:
virtual ex & operator[](size_t i);
// pattern matching
- virtual bool has(const ex & other) const;
+ virtual bool has(const ex & other, unsigned options = 0) const;
virtual bool match(const ex & pattern, lst & repl_lst) const;
protected:
virtual bool match_same_type(const basic & other) const;
}
// degree/coeff
+ virtual bool is_polynomial(const ex & var) const;
virtual int degree(const ex & s) const;
virtual int ldegree(const ex & s) const;
virtual ex coeff(const ex & s, int n = 1) const;
// rational functions
virtual ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const;
- virtual ex to_rational(lst &repl_lst) const;
- virtual ex to_polynomial(lst &repl_lst) const;
+ virtual ex to_rational(exmap & repl) const;
+ virtual ex to_polynomial(exmap & repl) const;
// polynomial algorithms
virtual numeric integer_content() const;
// noncommutativity
virtual unsigned return_type() const;
- virtual unsigned return_type_tinfo() const;
+ virtual tinfo_t return_type_tinfo() const;
+
+ // functions for complex expressions
+ virtual ex conjugate() const;
+ virtual ex real_part() const;
+ virtual ex imag_part() const;
-protected: // functions that should be called from class ex only
+ // functions that should be called from class ex only
+protected:
virtual int compare_same_type(const basic & other) const;
virtual bool is_equal_same_type(const basic & other) const;
int compare(const basic & other) const;
bool is_equal(const basic & other) const;
const basic & hold() const;
- unsigned gethash() const { if (flags & status_flags::hash_calculated) return hashvalue; else return calchash(); }
- unsigned tinfo() const {return tinfo_key;}
+
+ unsigned gethash() const
+ {
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.total_gethash++;
+#endif
+ if (flags & status_flags::hash_calculated) {
+#ifdef GINAC_COMPARE_STATISTICS
+ compare_statistics.gethash_cached++;
+#endif
+ return hashvalue;
+ } else {
+ return calchash();
+ }
+ }
+
+ tinfo_t tinfo() const {return tinfo_key;}
/** Set some status_flags. */
const basic & setflag(unsigned f) const {flags |= f; return *this;}
// member variables
protected:
- unsigned tinfo_key; ///< typeinfo
+ tinfo_t tinfo_key; ///< type info
mutable unsigned flags; ///< of type status_flags
mutable unsigned hashvalue; ///< hash value
};
return dynamic_cast<const T *>(&obj) != 0;
}
-/** Check if obj is a T, not including base classes. This one is just an
- * inefficient default. It should in all time-critical cases be overridden
- * by template specializations that use the TINFO_* constants directly. */
+/** Check if obj is a T, not including base classes. */
template <class T>
-inline bool is_exactly_a(const basic &obj)
+inline bool is_exactly_a(const basic & obj)
{
- return obj.tinfo() == T::get_class_info_static().options.get_id();
+ return obj.tinfo() == &T::tinfo_static;
}
} // namespace GiNaC
git://www.ginac.de / ginac.git / blobdiff