* Interface to GiNaC's light-weight expression handles. */
/*
- * GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2001 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
#ifndef __GINAC_EX_H__
#define __GINAC_EX_H__
-#include <iostream>
#include "basic.h"
#include "operators.h"
-#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
+// Sorry, this is the only constant to pollute the global scope, the other ones
+// are defined in utils.h and not visible from outside.
class ex;
-class expand_options;
-class status_flags;
+extern const ex & _ex0(void); ///< single ex(numeric(0))
class symbol;
class lst;
-
-// Sorry, this is the only constant to pollute the global scope, the other ones
-// are defined in utils.h and not visible from outside.
-extern const ex & _ex0(void); // single ex(numeric(0))
-
-#define INLINE_EX_CONSTRUCTORS
+class scalar_products;
/** 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
class ex
{
friend class basic;
-
+
// member functions
-
- // default constructor, destructor, copy constructor assignment operator and helpers
+
+ // default ctor, dtor, copy ctor assignment operator and helpers
public:
- ex()
-#ifdef INLINE_EX_CONSTRUCTORS
- : bp(_ex0().bp)
- {
- GINAC_ASSERT(_ex0().bp!=0);
- GINAC_ASSERT(_ex0().bp->flags & status_flags::dynallocated);
- GINAC_ASSERT(bp!=0);
- ++bp->refcount;
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ~ex()
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- GINAC_ASSERT(bp!=0);
- GINAC_ASSERT(bp->flags & status_flags::dynallocated);
- if (--bp->refcount == 0) {
- delete bp;
- }
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(const ex & other)
-#ifdef INLINE_EX_CONSTRUCTORS
- : bp(other.bp)
- {
- GINAC_ASSERT(bp!=0);
- GINAC_ASSERT((bp->flags) & status_flags::dynallocated);
- ++bp->refcount;
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- const ex & operator=(const ex & other)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- GINAC_ASSERT(bp!=0);
- GINAC_ASSERT(bp->flags & status_flags::dynallocated);
- GINAC_ASSERT(other.bp!=0);
- GINAC_ASSERT(other.bp->flags & status_flags::dynallocated);
- ++other.bp->refcount;
- basic * tmpbp=other.bp;
- if (--bp->refcount==0) {
- delete bp;
- }
- bp=tmpbp;
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- return *this;
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
-
- // other constructors
+ ex();
+ ~ex();
+ ex(const ex & other);
+ const ex & operator=(const ex & other);
+ // other ctors
public:
- ex(const basic & other)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_basic(other);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(int i)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_int(i);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(unsigned int i)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_uint(i);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(long i)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_long(i);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(unsigned long i)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_ulong(i);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
- ex(double const d)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_double(d);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
+ ex(const basic & other);
+ ex(int i);
+ ex(unsigned int i);
+ ex(long i);
+ ex(unsigned long i);
+ ex(double const d);
/** Construct ex from string and a list of symbols. The input grammar is
* similar to the GiNaC output format. All symbols to be used in the
* expression must be specified in a lst in the second argument. Undefined
* symbols and other parser errors will throw an exception. */
- ex(const std::string &s, const ex &l)
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- construct_from_string_and_lst(s, l);
-#ifdef OBSCURE_CINT_HACK
- update_last_created_or_assigned_bp();
-#endif // def OBSCURE_CINT_HACK
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
-
+ ex(const std::string &s, const ex &l);
// functions overriding virtual functions from bases classes
// none
ex series(const ex & r, int order, unsigned options = 0) const;
ex subs(const lst & ls, const lst & lr) const;
ex subs(const ex & e) const;
- exvector get_indices(void) const;
+ exvector get_free_indices(void) const;
+ ex simplify_indexed(void) const;
+ ex simplify_indexed(const scalar_products & sp) const;
ex simplify_ncmul(const exvector & v) const;
ex operator[](const ex & index) const;
ex operator[](int i) const;
ex & let_op(int i);
ex lhs(void) const;
ex rhs(void) const;
- int compare(const ex & other) const
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- GINAC_ASSERT(bp!=0);
- GINAC_ASSERT(other.bp!=0);
- if (bp==other.bp) {
- // special case: both expression point to same basic, trivially equal
- return 0;
- }
- return bp->compare(*other.bp);
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
- bool is_equal(const ex & other) const
-#ifdef INLINE_EX_CONSTRUCTORS
- {
- GINAC_ASSERT(bp!=0);
- GINAC_ASSERT(other.bp!=0);
- if (bp==other.bp) {
- // special case: both expression point to same basic, trivially equal
- return true;
- }
- return bp->is_equal(*other.bp);
- }
-#else
-;
-#endif // def INLINE_EX_CONSTRUCTORS
- bool is_zero(void) const {return compare(_ex0())==0;};
-
+ int compare(const ex & other) const;
+ bool is_equal(const ex & other) const;
+ bool is_zero(void) const { return is_equal(_ex0()); }
+
unsigned return_type(void) const;
unsigned return_type_tinfo(void) const;
unsigned gethash(void) const;
-
+
ex exadd(const ex & rh) const;
ex exmul(const ex & rh) const;
ex exncmul(const ex & rh) const;
#ifdef OBSCURE_CINT_HACK
public:
static bool last_created_or_assigned_bp_can_be_converted_to_ex(void)
- {
- if (last_created_or_assigned_bp==0) return false;
- if ((last_created_or_assigned_bp->flags &
- status_flags::dynallocated)==0) return false;
- if ((last_created_or_assigned_bp->flags &
- status_flags::evaluated)==0) return false;
- return true;
- }
+ {
+ if (last_created_or_assigned_bp==0) return false;
+ if ((last_created_or_assigned_bp->flags &
+ status_flags::dynallocated)==0) return false;
+ if ((last_created_or_assigned_bp->flags &
+ status_flags::evaluated)==0) return false;
+ return true;
+ }
protected:
void update_last_created_or_assigned_bp(void)
- {
- if (last_created_or_assigned_bp!=0) {
- if (--last_created_or_assigned_bp->refcount == 0) {
- delete last_created_or_assigned_bp;
- }
+ {
+ if (last_created_or_assigned_bp!=0) {
+ if (--last_created_or_assigned_bp->refcount == 0) {
+ delete last_created_or_assigned_bp;
}
- last_created_or_assigned_bp=bp;
- ++last_created_or_assigned_bp->refcount;
- last_created_or_assigned_exp=(long)(void *)(this);
}
+ last_created_or_assigned_bp = bp;
+ ++last_created_or_assigned_bp->refcount;
+ last_created_or_assigned_exp = (long)(void *)(this);
+ }
#endif // def OBSCURE_CINT_HACK
// member variables
public:
- basic *bp;
+ basic *bp; ///< pointer to basic object managed by this
#ifdef OBSCURE_CINT_HACK
static basic * last_created_or_assigned_bp;
static basic * dummy_bp;
#endif // def OBSCURE_CINT_HACK
};
+
+// performance-critical inlined method implementations
+
+inline
+ex::ex() : bp(_ex0().bp)
+{
+ /*debugmsg("ex default ctor",LOGLEVEL_CONSTRUCT);*/
+ GINAC_ASSERT(_ex0().bp!=0);
+ GINAC_ASSERT(_ex0().bp->flags & status_flags::dynallocated);
+ GINAC_ASSERT(bp!=0);
+ ++bp->refcount;
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::~ex()
+{
+ /*debugmsg("ex dtor",LOGLEVEL_DESTRUCT);*/
+ GINAC_ASSERT(bp!=0);
+ GINAC_ASSERT(bp->flags & status_flags::dynallocated);
+ if (--bp->refcount == 0)
+ delete bp;
+}
+
+inline
+ex::ex(const ex & other) : bp(other.bp)
+{
+ /*debugmsg("ex copy ctor",LOGLEVEL_CONSTRUCT);*/
+ GINAC_ASSERT(bp!=0);
+ GINAC_ASSERT((bp->flags) & status_flags::dynallocated);
+ ++bp->refcount;
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+const ex & ex::operator=(const ex & other)
+{
+ /*debugmsg("ex operator=",LOGLEVEL_ASSIGNMENT);*/
+ GINAC_ASSERT(bp!=0);
+ GINAC_ASSERT(bp->flags & status_flags::dynallocated);
+ GINAC_ASSERT(other.bp!=0);
+ GINAC_ASSERT(other.bp->flags & status_flags::dynallocated);
+ if (--bp->refcount==0)
+ delete bp;
+ ++other.bp->refcount;
+ bp = other.bp;
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+ return *this;
+}
+
+inline
+ex::ex(const basic & other)
+{
+ /*debugmsg("ex ctor from basic",LOGLEVEL_CONSTRUCT);*/
+ construct_from_basic(other);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(int i)
+{
+ /*debugmsg("ex ctor from int",LOGLEVEL_CONSTRUCT);*/
+ construct_from_int(i);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(unsigned int i)
+{
+ /*debugmsg("ex ctor from unsigned int",LOGLEVEL_CONSTRUCT);*/
+ construct_from_uint(i);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(long i)
+{
+ /*debugmsg("ex ctor from long",LOGLEVEL_CONSTRUCT);*/
+ construct_from_long(i);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(unsigned long i)
+{
+ /*debugmsg("ex ctor from unsigned long",LOGLEVEL_CONSTRUCT);*/
+ construct_from_ulong(i);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(double const d)
+{
+ /*debugmsg("ex ctor from double",LOGLEVEL_CONSTRUCT);*/
+ construct_from_double(d);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+ex::ex(const std::string &s, const ex &l)
+{
+ /*debugmsg("ex ctor from string,lst",LOGLEVEL_CONSTRUCT);*/
+ construct_from_string_and_lst(s, l);
+#ifdef OBSCURE_CINT_HACK
+ update_last_created_or_assigned_bp();
+#endif // def OBSCURE_CINT_HACK
+}
+
+inline
+int ex::compare(const ex & other) const
+{
+ GINAC_ASSERT(bp!=0);
+ GINAC_ASSERT(other.bp!=0);
+ if (bp==other.bp) // trivial case: both expressions point to same basic
+ return 0;
+ return bp->compare(*other.bp);
+}
+
+inline
+bool ex::is_equal(const ex & other) const
+{
+ GINAC_ASSERT(bp!=0);
+ GINAC_ASSERT(other.bp!=0);
+ if (bp==other.bp) // trivial case: both expressions point to same basic
+ return true;
+ return bp->is_equal(*other.bp);
+}
+
+
// utility functions
inline bool are_ex_trivially_equal(const ex &e1, const ex &e2)
{
inline void swap(ex & e1, ex & e2)
{ e1.swap(e2); }
-#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
#endif // ndef __GINAC_EX_H__
-
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