X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fpower.h;h=86ba6c91dbb94db8bd0c5fb93be0989e61fea5e7;hp=6bdafa00048167d5975f3765a76e4d13189a81d8;hb=8e433a1e4ea5eec3ee913f596f11bc9ff26d8d10;hpb=e58227e1112f989f3b5417e497a61d53fc2971fa diff --git a/ginac/power.h b/ginac/power.h index 6bdafa00..86ba6c91 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) 1999-2005 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 @@ -26,63 +26,52 @@ #include "basic.h" #include "ex.h" -#ifndef NO_NAMESPACE_GINAC namespace GiNaC { -#endif // ndef NO_NAMESPACE_GINAC class numeric; class add; +class mul; /** This class holds a two-component object, a basis and and exponent * representing exponentiation. */ 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 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 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; + unsigned precedence() 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; + 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 lst & ls, const lst & lr) const; - ex normal(lst &sym_lst, lst &repl_lst, int level = 0) const; - ex to_rational(lst &repl_lst) const; - ex simplify_ncmul(const exvector & v) 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; + ex conjugate() 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 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 @@ -90,25 +79,30 @@ protected: // 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, unsigned options) const; + ex expand_add_2(const add & a, unsigned options) const; + ex expand_mul(const mul & m, const numeric & n, unsigned options, bool from_expand = false) 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(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 @@ -118,14 +112,22 @@ 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_NAMESPACE_GINAC } // namespace GiNaC -#endif // ndef NO_NAMESPACE_GINAC #endif // ndef __GINAC_POWER_H__