* Interface to GiNaC's light-weight expression handles. */
/*
- * GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2014 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __GINAC_EX_H__
-#define __GINAC_EX_H__
+#ifndef GINAC_EX_H
+#define GINAC_EX_H
+#include "basic.h"
+#include "ptr.h"
+
+#include <functional>
#include <iosfwd>
#include <iterator>
-#include <functional>
#include <stack>
-#include "basic.h"
-#include "ptr.h"
-
namespace GiNaC {
-
+#ifdef _MSC_VER
+ // MSVC produces a different symbol for _ex0 when it is declared inside
+ // ex::is_zero() than when it is declared at top level as follows
+ extern const ex _ex0;
+#endif
/** Helper class to initialize the library. There must be one static object
* of this class in every object file that makes use of our flyweights in
*
* @see utils.cpp */
class library_init {
+ static void init_unarchivers();
public:
library_init();
~library_init();
/** For construction of flyweights, etc. */
static library_init library_initializer;
-
class scalar_products;
class const_iterator;
class const_preorder_iterator;
class const_postorder_iterator;
-/** Lightweight wrapper for GiNaC's symbolic objects. Basically all it does is
- * to hold a pointer to the other objects, manage the reference counting and
- * provide methods for manipulation of these objects. (Some people call such
- * a thing a proxy class.) */
+/** Lightweight wrapper for GiNaC's symbolic objects. It holds a pointer to
+ * the other object in order to do garbage collection by the method of
+ * reference counting. I.e., it is a smart pointer. Also, the constructor
+ * ex::ex(const basic & other) calls the methods that do automatic
+ * evaluation. E.g., x-x turns automatically into 0. */
class ex {
friend class archive_node;
friend inline bool are_ex_trivially_equal(const ex &, const ex &);
ex lhs() const;
ex rhs() const;
- // complex conjugation
+ // function for complex expressions
ex conjugate() const { return bp->conjugate(); }
+ ex real_part() const { return bp->real_part(); }
+ ex imag_part() const { return bp->imag_part(); }
// pattern matching
- bool has(const ex & pattern) const { return bp->has(pattern); }
- bool find(const ex & pattern, lst & found) const;
+ bool has(const ex & pattern, unsigned options = 0) const { return bp->has(pattern, options); }
+ bool find(const ex & pattern, exset& found) const;
bool match(const ex & pattern) const;
- bool match(const ex & pattern, lst & repl_lst) const { return bp->match(pattern, repl_lst); }
+ bool match(const ex & pattern, exmap & repls) const { return bp->match(pattern, repls); }
// substitutions
ex subs(const exmap & m, unsigned options = 0) const;
void traverse(visitor & v) const { traverse_preorder(v); }
// degree/coeff
+ bool is_polynomial(const ex & vars) const;
int degree(const ex & s) const { return bp->degree(s); }
int ldegree(const ex & s) const { return bp->ldegree(s); }
ex coeff(const ex & s, int n = 1) const { return bp->coeff(s, n); }
// comparison
int compare(const ex & other) const;
bool is_equal(const ex & other) const;
- bool is_zero() const { extern const ex _ex0; return is_equal(_ex0); }
+ bool is_zero() const {
+#ifndef _MSC_VER
+ extern const ex _ex0;
+#endif
+ return is_equal(_ex0);
+ }
+ bool is_zero_matrix() const;
// symmetry
ex symmetrize() const;
// noncommutativity
unsigned return_type() const { return bp->return_type(); }
- unsigned return_type_tinfo() const { return bp->return_type_tinfo(); }
+ return_type_t return_type_tinfo() const { return bp->return_type_tinfo(); }
unsigned gethash() const { return bp->gethash(); }
void operator() (ex &lh, ex &rh) const { lh.swap(rh); }
};
+// Make it possible to print exvectors and exmaps
+std::ostream & operator<<(std::ostream & os, const exvector & e);
+std::ostream & operator<<(std::ostream & os, const exset & e);
+std::ostream & operator<<(std::ostream & os, const exmap & e);
+
// wrapper functions around member functions
inline size_t nops(const ex & thisex)
{ return thisex.nops(); }
inline ex conjugate(const ex & thisex)
{ return thisex.conjugate(); }
-inline bool has(const ex & thisex, const ex & pattern)
-{ return thisex.has(pattern); }
+inline ex real_part(const ex & thisex)
+{ return thisex.real_part(); }
+
+inline ex imag_part(const ex & thisex)
+{ return thisex.imag_part(); }
-inline bool find(const ex & thisex, const ex & pattern, lst & found)
+inline bool has(const ex & thisex, const ex & pattern, unsigned options = 0)
+{ return thisex.has(pattern, options); }
+
+inline bool find(const ex & thisex, const ex & pattern, exset& found)
{ return thisex.find(pattern, found); }
+inline bool is_polynomial(const ex & thisex, const ex & vars)
+{ return thisex.is_polynomial(vars); }
+
inline int degree(const ex & thisex, const ex & s)
{ return thisex.degree(s); }
inline ex series(const ex & thisex, const ex & r, int order, unsigned options = 0)
{ return thisex.series(r, order, options); }
-inline bool match(const ex & thisex, const ex & pattern, lst & repl_lst)
+inline bool match(const ex & thisex, const ex & pattern, exmap& repl_lst)
{ return thisex.match(pattern, repl_lst); }
inline ex simplify_indexed(const ex & thisex, unsigned options = 0)
ex operator()(const ex & e) { return ptr(e, arg1, arg2, arg3); }
};
+template<class C>
+class pointer_to_member_to_map_function : public map_function {
+protected:
+ ex (C::*ptr)(const ex &);
+ C &c;
+public:
+ explicit pointer_to_member_to_map_function(ex (C::*member)(const ex &), C &obj) : ptr(member), c(obj) {}
+ ex operator()(const ex & e) { return (c.*ptr)(e); }
+};
+
+template<class C, class T1>
+class pointer_to_member_to_map_function_1arg : public map_function {
+protected:
+ ex (C::*ptr)(const ex &, T1);
+ C &c;
+ T1 arg1;
+public:
+ explicit pointer_to_member_to_map_function_1arg(ex (C::*member)(const ex &, T1), C &obj, T1 a1) : ptr(member), c(obj), arg1(a1) {}
+ ex operator()(const ex & e) { return (c.*ptr)(e, arg1); }
+};
+
+template<class C, class T1, class T2>
+class pointer_to_member_to_map_function_2args : public map_function {
+protected:
+ ex (C::*ptr)(const ex &, T1, T2);
+ C &c;
+ T1 arg1;
+ T2 arg2;
+public:
+ explicit pointer_to_member_to_map_function_2args(ex (C::*member)(const ex&, T1, T2), C &obj, T1 a1, T2 a2) : ptr(member), c(obj), arg1(a1), arg2(a2) {}
+ ex operator()(const ex & e) { return (c.*ptr)(e, arg1, arg2); }
+};
+
+template<class C, class T1, class T2, class T3>
+class pointer_to_member_to_map_function_3args : public map_function {
+protected:
+ ex (C::*ptr)(const ex &, T1, T2, T3);
+ C &c;
+ T1 arg1;
+ T2 arg2;
+ T3 arg3;
+public:
+ explicit pointer_to_member_to_map_function_3args(ex (C::*member)(const ex &, T1, T2, T3), C &obj, T1 a1, T2 a2, T3 a3) : ptr(member), c(obj), arg1(a1), arg2(a2), arg3(a3) {}
+ ex operator()(const ex & e) { return (c.*ptr)(e, arg1, arg2, arg3); }
+};
+
inline ex ex::map(ex f(const ex &)) const
{
pointer_to_map_function fcn(f);
} // namespace std
-#endif // ndef __GINAC_EX_H__
+#endif // ndef GINAC_EX_H
git://www.ginac.de / ginac.git / blobdiff