X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fnumeric.h;h=bf5c70134cedcfafcad15a06d3c8f003a1777bca;hp=691d7de50e60bde5bd8b0cf978ea23ac4da423f2;hb=14d8318d10eb608300e006af3bc261690c14d041;hpb=0f7b8280ad89fa88a0cbaab7785a4b7cb06e6a63 diff --git a/ginac/numeric.h b/ginac/numeric.h index 691d7de5..bf5c7013 100644 --- a/ginac/numeric.h +++ b/ginac/numeric.h @@ -3,7 +3,7 @@ * Makes the interface to the underlying bignum package available. */ /* - * GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2008 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 @@ -17,7 +17,7 @@ * * 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_NUMERIC_H__ @@ -27,10 +27,9 @@ #include "ex.h" #include +#include -#include -// forward decln of cln::cl_N, since cln/complex_class.h is not included: -namespace cln { class cl_N; } +#include #if defined(G__CINTVERSION) && !defined(__MAKECINT__) // Cint @$#$! doesn't like forward declaring classes used for casting operators @@ -41,6 +40,12 @@ namespace cln { class cl_N; } namespace GiNaC { +/** Function pointer to implement callbacks in the case 'Digits' gets changed. + * Main purpose of such callbacks is to adjust look-up tables of certain + * functions to the new precision. Parameter contains the signed difference + * between new Digits and old Digits. */ +typedef void (* digits_changed_callback)(long); + /** This class is used to instantiate a global singleton object Digits * which behaves just like Maple's Digits. We need an object rather * than a dumber basic type since as a side-effect we let it change @@ -57,11 +62,14 @@ public: _numeric_digits(); _numeric_digits& operator=(long prec); operator long(); - void print(std::ostream &os) const; + void print(std::ostream& os) const; + void add_callback(digits_changed_callback callback); // member variables private: long digits; ///< Number of decimal digits static bool too_late; ///< Already one object present + // Holds a list of functions that get called when digits is changed. + std::vector callbacklist; }; @@ -95,22 +103,25 @@ public: // functions overriding virtual functions from base classes public: - void print(const print_context & c, unsigned level = 0) const; unsigned precedence() const {return 30;} bool info(unsigned inf) const; + bool is_polynomial(const ex & var) const; int degree(const ex & s) const; int ldegree(const ex & s) const; ex coeff(const ex & s, int n = 1) const; - bool has(const ex &other) const; + bool has(const ex &other, unsigned options = 0) const; ex eval(int level = 0) const; ex evalf(int level = 0) const; ex subs(const exmap & m, unsigned options = 0) const { return subs_one_level(m, options); } // overwrites basic::subs() for performance reasons ex normal(exmap & repl, exmap & rev_lookup, int level = 0) const; - ex to_rational(lst &repl_lst) const; - ex to_polynomial(lst &repl_lst) const; + ex to_rational(exmap & repl) const; + ex to_polynomial(exmap & repl) const; numeric integer_content() const; ex smod(const numeric &xi) const; numeric max_coefficient() const; + ex conjugate() const; + ex real_part() const; + ex imag_part() const; protected: /** Implementation of ex::diff for a numeric always returns 0. * @see ex::diff */ @@ -140,6 +151,7 @@ public: const numeric & operator=(double d); const numeric & operator=(const char *s); const numeric inverse() const; + numeric step() const; int csgn() const; int compare(const numeric &other) const; bool is_equal(const numeric &other) const; @@ -172,12 +184,21 @@ public: const numeric denom() const; int int_length() const; // converting routines for interfacing with CLN: - numeric(const cln::cl_N &z); + explicit numeric(const cln::cl_N &z); + +protected: + void print_numeric(const print_context & c, const char *par_open, const char *par_close, const char *imag_sym, const char *mul_sym, unsigned level) const; + void do_print(const print_context & 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_csrc_cl_N(const print_csrc_cl_N & c, unsigned level) const; + void do_print_tree(const print_tree & c, unsigned level) const; + void do_print_python_repr(const print_python_repr & c, unsigned level) const; // member variables protected: - cln::cl_number value; + cln::cl_N value; }; @@ -233,6 +254,9 @@ inline const numeric pow(const numeric &x, const numeric &y) inline const numeric inverse(const numeric &x) { return x.inverse(); } +inline numeric step(const numeric &x) +{ return x.step(); } + inline int csgn(const numeric &x) { return x.csgn(); } @@ -242,6 +266,9 @@ inline bool is_zero(const numeric &x) inline bool is_positive(const numeric &x) { return x.is_positive(); } +inline bool is_negative(const numeric &x) +{ return x.is_negative(); } + inline bool is_integer(const numeric &x) { return x.is_integer(); } @@ -300,14 +327,6 @@ ex EulerEvalf(); ex CatalanEvalf(); -// utility functions - -/** Specialization of is_exactly_a(obj) for numeric objects. */ -template<> inline bool is_exactly_a(const basic & obj) -{ - return obj.tinfo()==TINFO_numeric; -} - } // namespace GiNaC #ifdef __MAKECINT__