/** @file power.h
*
- * Interface to GiNaC's symbolic exponentiation (basis^exponent).
- *
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * Interface to GiNaC's symbolic exponentiation (basis^exponent). */
+
+/*
+ * GiNaC Copyright (C) 1999-2020 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
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __GINAC_POWER_H__
-#define __GINAC_POWER_H__
+#ifndef GINAC_POWER_H
+#define GINAC_POWER_H
+
+#include "basic.h"
+#include "ex.h"
+#include "archive.h"
-#include <ginac/basic.h>
-#include <ginac/ex.h>
+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
{
- 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(power const & other);
- power const & operator=(power const & other);
-protected:
- void copy(power const & other);
- void destroy(bool call_parent);
-
- // other constructors
-public:
- power(ex const & lh, ex const & rh);
- power(ex const & lh, numeric const & rh);
-
- // functions overriding virtual functions from bases classes
+ power(const ex & lh, const ex & rh) : basis(lh), exponent(rh) {}
+ template<typename T> power(const ex & lh, const T & rh) : basis(lh), exponent(rh) {}
+
+ // functions overriding virtual functions from base classes
public:
- basic * duplicate() const;
- void printraw(ostream & os) const;
- void printtree(ostream & os, unsigned indent) const;
- void print(ostream & os, unsigned upper_precedence=0) const;
- void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
- bool info(unsigned inf) const;
- int nops() const;
- ex & let_op(int const i);
- int degree(symbol const & s) const;
- int ldegree(symbol const & s) const;
- ex coeff(symbol const & s, int const n=1) const;
- ex eval(int level=0) const;
- ex evalf(int level=0) const;
- ex diff(symbol const & s) const;
- ex series(symbol const & s, ex const & point, int order) const;
- ex subs(lst const & ls, lst const & lr) const;
- ex normal(lst &sym_lst, lst &repl_lst, int level=0) const;
- ex simplify_ncmul(exvector const & v) const;
+ unsigned precedence() const override {return 60;}
+ bool info(unsigned inf) const override;
+ size_t nops() const override;
+ ex op(size_t i) const override;
+ ex map(map_function & f) const override;
+ bool is_polynomial(const ex & var) const override;
+ int degree(const ex & s) const override;
+ int ldegree(const ex & s) const override;
+ ex coeff(const ex & s, int n = 1) const override;
+ ex eval() const override;
+ ex evalf() const override;
+ ex evalm() const override;
+ ex series(const relational & s, int order, unsigned options = 0) const override;
+ ex subs(const exmap & m, unsigned options = 0) const override;
+ bool has(const ex & other, unsigned options = 0) const override;
+ ex normal(exmap & repl, exmap & rev_lookup, lst & modifier) const override;
+ ex to_rational(exmap & repl) const override;
+ ex to_polynomial(exmap & repl) const override;
+ ex conjugate() const override;
+ ex real_part() const override;
+ ex imag_part() const override;
+ /** Save (a.k.a. serialize) object into archive. */
+ void archive(archive_node& n) const override;
+ /** Read (a.k.a. deserialize) object from archive. */
+ void read_archive(const archive_node& n, lst& syms) override;
protected:
- int compare_same_type(basic const & 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 override;
+ ex eval_ncmul(const exvector & v) const override;
+ unsigned return_type() const override;
+ return_type_t return_type_tinfo() const override;
+ ex expand(unsigned options = 0) const override;
+
+ // new virtual functions which can be overridden by derived classes
+ // none
+
+ // non-virtual functions in this class
protected:
- ex expand_add(add const & a, int const n) const;
- ex expand_add_2(add const & a) const;
- ex expand_mul(mul const & m, numeric const & n) const;
- //ex expand_commutative_3(ex const & basis, numeric const & exponent,
- // unsigned options) const;
- // ex expand_noncommutative(ex const & basis, numeric const & 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;
+ void do_print_csrc_cl_N(const print_csrc_cl_N & c, unsigned level) const;
+
+ static ex expand_add(const add & a, long n, unsigned options);
+ static ex expand_add_2(const add & a, unsigned options);
+ static ex expand_mul(const mul & m, const numeric & n, unsigned options, bool from_expand = false);
+
// member variables
-
+
protected:
- ex basis;
- ex exponent;
- static unsigned precedence;
+ ex basis;
+ ex exponent;
};
-
-// global constants
-
-extern const power some_power;
-extern type_info const & typeid_power;
-
-#define ex_to_power(X) static_cast<power const &>(*(X).bp)
+GINAC_DECLARE_UNARCHIVER(power);
// wrapper functions
*
* @param b the basis expression
* @param e the exponent expression */
-inline ex pow(ex const & b, ex const & e)
-{ return power(b,e); }
+inline ex pow(const ex & b, const ex & e)
+{
+ return dynallocate<power>(b, e);
+}
+template<typename T1, typename T2>
+inline ex pow(const T1 & b, const T2 & e)
+{
+ return dynallocate<power>(ex(b), ex(e));
+}
-/** Square root expression. Returns a power-object with exponent 1/2 as a new
- * expression. */
-inline ex sqrt(ex const & a)
-{ return power(a,exHALF()); }
+/** 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);
+}
-#endif // ndef __GINAC_POWER_H__
+} // namespace GiNaC
+#endif // ndef GINAC_POWER_H
git://www.ginac.de / ginac.git / blobdiff