X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fpower.h;h=46acef9773395f30cda05179af51fd0a88e97c4e;hp=6bdafa00048167d5975f3765a76e4d13189a81d8;hb=049247b23983117bf96237b7b503300812cf92ef;hpb=e58227e1112f989f3b5417e497a61d53fc2971fa

diff --git a/ginac/power.h b/ginac/power.h
index 6bdafa00..46acef97 100644
--- a/ginac/power.h
+++ b/ginac/power.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's symbolic exponentiation (basis^exponent). */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2003 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
@@ -26,9 +26,7 @@
 #include "basic.h"
 #include "ex.h"
 
-#ifndef NO_NAMESPACE_GINAC
 namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
 
 class numeric;
 class add;
@@ -38,49 +36,38 @@ class add;
 class power : public basic
 {
 	GINAC_DECLARE_REGISTERED_CLASS(power, basic)
-
+	
 	friend class mul;
-
+	
 // member functions
-
-	// default constructor, destructor, copy constructor assignment operator and helpers
-public:
-	power();
-	~power();
-	power(const power & other);
-	const power & operator=(const power & other);
-protected:
-	void copy(const power & other);
-	void destroy(bool call_parent);
-
-	// other constructors
+	
+	// other ctors
 public:
-	power(const ex & lh, const ex & rh);
-	power(const ex & lh, const numeric & rh);
-
-	// functions overriding virtual functions from bases classes
+	power(const ex & lh, const ex & rh) : inherited(TINFO_power), basis(lh), exponent(rh) {}
+	template<typename T> power(const ex & lh, const T & rh) : inherited(TINFO_power), basis(lh), exponent(rh) {}
+	
+	// functions overriding virtual functions from base classes
 public:
-	basic * duplicate() const;
-	void print(std::ostream & os, unsigned upper_precedence = 0) const;
-	void printraw(std::ostream & os) const;
-	void printtree(std::ostream & os, unsigned indent) const;
-	void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence = 0) const;
+	void print(const print_context & c, unsigned level = 0) const;
+	unsigned precedence(void) const {return 60;}
 	bool info(unsigned inf) const;
 	unsigned nops() const;
 	ex & let_op(int i);
-	int degree(const symbol & s) const;
-	int ldegree(const symbol & s) const;
-	ex coeff(const symbol & s, int n = 1) const;
+	ex map(map_function & f) const;
+	int degree(const ex & s) const;
+	int ldegree(const ex & s) const;
+	ex coeff(const ex & s, int n = 1) const;
 	ex eval(int level=0) const;
 	ex evalf(int level=0) const;
+	ex evalm(void) const;
 	ex series(const relational & s, int order, unsigned options = 0) const;
-	ex subs(const lst & ls, const lst & lr) const;
+	ex subs(const lst & ls, const lst & lr, bool no_pattern = false) const;
 	ex normal(lst &sym_lst, lst &repl_lst, int level = 0) const;
 	ex to_rational(lst &repl_lst) const;
+	exvector get_free_indices(void) const;
 	ex simplify_ncmul(const exvector & v) const;
 protected:
 	ex derivative(const symbol & s) const;
-	int compare_same_type(const basic & other) const;
 	unsigned return_type(void) const;
 	unsigned return_type_tinfo(void) const;
 	ex expand(unsigned options = 0) const;
@@ -93,22 +80,20 @@ protected:
 	ex expand_add(const add & a, int n) const;
 	ex expand_add_2(const add & a) const;
 	ex expand_mul(const mul & m, const numeric & n) const;
-	//ex expand_commutative_3(const ex & basis, const numeric & exponent,
-	//                        unsigned options) const;
-	//ex expand_noncommutative(const ex & basis, const numeric & exponent, unsigned options) const;
-
+	
 // member variables
-
+	
 protected:
 	ex basis;
 	ex exponent;
-	static unsigned precedence;
 };
 
 // utility functions
-inline const power &ex_to_power(const ex &e)
+
+/** Efficient specialization of is_exactly_a<power>(obj) for power objects. */
+template<> inline bool is_exactly_a<power>(const basic & obj)
 {
-	return static_cast<const power &>(*e.bp);
+	return obj.tinfo()==TINFO_power;
 }
 
 // wrapper functions
@@ -118,14 +103,22 @@ inline const power &ex_to_power(const ex &e)
  *  @param b the basis expression
  *  @param e the exponent expression */
 inline ex pow(const ex & b, const ex & e)
-{ return power(b,e); }
+{
+	return power(b, e);
+}
+template<typename T1, typename T2>
+inline ex pow(const T1 & b, const T2 & e)
+{
+	return power(ex(b), ex(e));
+}
 
-/** Square root expression.  Returns a power-object with exponent 1/2 as a new
- *  expression.  */
-ex sqrt(const ex & a);
+/** Square root expression.  Returns a power-object with exponent 1/2. */
+inline ex sqrt(const ex & a)
+{
+	extern const ex _ex1_2;
+	return power(a,_ex1_2);
+}
 
-#ifndef NO_NAMESPACE_GINAC
 } // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
 
 #endif // ndef __GINAC_POWER_H__