X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fpower.h;h=c60ad4e61ac08feee4770b9c63fc664cf80aa3c9;hp=a0ebc29bf213aa8b6c542839f5aa252053db2905;hb=a49cc30f7d44e7ac93d41c4beb2d9e9a325a3728;hpb=dbb36db8d02b2c25af6bbfff8135112637936e1f diff --git a/ginac/power.h b/ginac/power.h index a0ebc29b..c60ad4e6 100644 --- a/ginac/power.h +++ b/ginac/power.h @@ -3,7 +3,7 @@ * Interface to GiNaC's symbolic exponentiation (basis^exponent). */ /* - * GiNaC Copyright (C) 1999-2000 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_GINAC_NAMESPACE namespace GiNaC { -#endif // ndef NO_GINAC_NAMESPACE class numeric; class add; @@ -37,82 +35,72 @@ class add; * representing exponentiation. */ class power : public basic { - GINAC_DECLARE_REGISTERED_CLASS(power, basic) - - friend class mul; - + GINAC_DECLARE_REGISTERED_CLASS(power, basic) + + friend class mul; + // member functions - - // default constructor, destructor, copy constructor assignment operator and helpers + + // other constructors 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 + power(const ex & lh, const ex & rh) : inherited(TINFO_power), basis(lh), exponent(rh) {} + template power(const ex & lh, const T & rh) : inherited(TINFO_power), basis(lh), exponent(rh) {} + + // functions overriding virtual functions from base classes public: - power(const ex & lh, const ex & rh); - power(const ex & lh, const numeric & rh); - - // functions overriding virtual functions from bases classes -public: - basic * duplicate() const; - void print(ostream & os, unsigned upper_precedence=0) const; - void printraw(ostream & os) const; - void printtree(ostream & os, unsigned indent) const; - void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const; - 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 eval(int level=0) const; - ex evalf(int level=0) const; - ex diff(const symbol & s) const; - ex series(const symbol & s, const ex & point, int order) const; - ex subs(const lst & ls, const lst & lr) const; - ex normal(lst &sym_lst, lst &repl_lst, int level=0) const; - ex simplify_ncmul(const exvector & v) const; + unsigned precedence() const {return 60;} + bool info(unsigned inf) const; + size_t nops() const; + ex op(size_t i) 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() const; + ex series(const relational & s, int order, unsigned options = 0) const; + ex subs(const exmap & m, unsigned options = 0) const; + ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const; + ex to_rational(exmap & repl) const; + ex to_polynomial(exmap & repl) const; + exvector get_free_indices() const; protected: - 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; - - // new virtual functions which can be overridden by derived classes - // none - - // non-virtual functions in this class + ex derivative(const symbol & s) const; + ex eval_ncmul(const exvector & v) const; + unsigned return_type() const; + unsigned return_type_tinfo() const; + ex expand(unsigned options = 0) const; + + // new virtual functions which can be overridden by derived classes + // none + + // non-virtual functions in this class 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; - + void print_power(const print_context & c, const char *powersymbol, const char *openbrace, const char *closebrace, unsigned level) const; + void do_print_dflt(const print_dflt & c, unsigned level) const; + void do_print_latex(const print_latex & c, unsigned level) const; + void do_print_csrc(const print_csrc & c, unsigned level) const; + void do_print_python(const print_python & c, unsigned level) const; + void do_print_python_repr(const print_python_repr & c, unsigned level) const; + + 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; + // member variables - + protected: - ex basis; - ex exponent; - static unsigned precedence; + ex basis; + ex exponent; }; -// global constants - -extern const power some_power; -extern const type_info & typeid_power; - // utility functions -inline const power &ex_to_power(const ex &e) + +/** Efficient specialization of is_exactly_a(obj) for power objects. */ +template<> inline bool is_exactly_a(const basic & obj) { - return static_cast(*e.bp); + return obj.tinfo()==TINFO_power; } // wrapper functions @@ -122,14 +110,22 @@ 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 +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_GINAC_NAMESPACE } // namespace GiNaC -#endif // ndef NO_GINAC_NAMESPACE #endif // ndef __GINAC_POWER_H__