-#!/usr/bin/perl -w
-
-$maxargs=10;
+# This perl script automatically generates function.h and function.cpp
+
+# function.pl options: \$maxargs=${maxargs}
+#
+# GiNaC Copyright (C) 1999-2004 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
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# 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
+
+$maxargs=14;
sub generate_seq {
- my ($seq_template,$n)=@_;
- my ($res,$N);
-
- $res='';
- for ($N=1; $N<=$n; $N++) {
- $res .= eval('"' . $seq_template . '"');
- if ($N!=$n) {
- $res .= ', ';
- }
- }
- return $res;
+ my ($seq_template,$n)=@_;
+ my ($res,$N);
+
+ $res='';
+ for ($N=1; $N<=$n; $N++) {
+ $res .= eval('"' . $seq_template . '"');
+ if ($N!=$n) {
+ $res .= ', ';
+ }
+ }
+ return $res;
+}
+
+sub generate_from_to {
+ my ($template,$seq_template1,$seq_template2,$seq_template3,$from,$to)=@_;
+ my ($res,$N,$SEQ);
+
+ $res='';
+ for ($N=$from; $N<=$to; $N++) {
+ $SEQ1=generate_seq($seq_template1,$N);
+ $SEQ2=generate_seq($seq_template2,$N);
+ $SEQ3=generate_seq($seq_template3,$N);
+ $res .= eval('"' . $template . '"');
+ $SEQ1=''; # to avoid main::SEQ1 used only once warning
+ $SEQ2=''; # same as above
+ $SEQ3=''; # same as above
+ }
+ return $res;
}
sub generate {
- my ($template,$seq_template1,$seq_template2)=@_;
- my ($res,$N,$SEQ);
-
- $res='';
- for ($N=1; $N<=$maxargs; $N++) {
- $SEQ1=generate_seq($seq_template1,$N);
- $SEQ2=generate_seq($seq_template2,$N);
- $res .= eval('"' . $template . '"');
- $SEQ1=''; # to avoid main::SEQ1 used only once warning
- $SEQ2=''; # same as above
- }
- return $res;
+ my ($template,$seq_template1,$seq_template2,$seq_template3)=@_;
+ return generate_from_to($template,$seq_template1,$seq_template2,$seq_template3,1,$maxargs);
}
-$declare_function_macro=generate(
- <<'END_OF_DECLARE_FUNCTION_MACRO','ex const & p${N}','p${N}');
+$declare_function_macro = generate(
+ <<'END_OF_DECLARE_FUNCTION_MACRO','typename T${N}','const T${N} & p${N}','GiNaC::ex(p${N})');
#define DECLARE_FUNCTION_${N}P(NAME) \\
-extern unsigned function_index_##NAME; \\
-inline function NAME(${SEQ1}) { \\
- return function(function_index_##NAME, ${SEQ2}); \\
+class NAME##_SERIAL { public: static unsigned serial; }; \\
+template<${SEQ1}> const GiNaC::function NAME(${SEQ2}) { \\
+ return GiNaC::function(NAME##_SERIAL::serial, ${SEQ3}); \\
}
END_OF_DECLARE_FUNCTION_MACRO
$typedef_eval_funcp=generate(
'typedef ex (* eval_funcp_${N})(${SEQ1});'."\n",
-'ex const &','');
+'const ex &','','');
$typedef_evalf_funcp=generate(
'typedef ex (* evalf_funcp_${N})(${SEQ1});'."\n",
-'ex const &','');
+'const ex &','','');
+
+$typedef_conjugate_funcp=generate(
+'typedef ex (* conjugate_funcp_${N})(${SEQ1});'."\n",
+'const ex &','','');
-$typedef_diff_funcp=generate(
-'typedef ex (* diff_funcp_${N})(${SEQ1}, unsigned);'."\n",
-'ex const &','');
+$typedef_derivative_funcp=generate(
+'typedef ex (* derivative_funcp_${N})(${SEQ1}, unsigned);'."\n",
+'const ex &','','');
$typedef_series_funcp=generate(
-'typedef ex (* series_funcp_${N})(${SEQ1}, symbol const &, ex const &, int);'."\n",
-'ex const &','');
+'typedef ex (* series_funcp_${N})(${SEQ1}, const relational &, int, unsigned);'."\n",
+'const ex &','','');
+
+$typedef_print_funcp=generate(
+'typedef void (* print_funcp_${N})(${SEQ1}, const print_context &);'."\n",
+'const ex &','','');
+
+$eval_func_interface=generate(' function_options & eval_func(eval_funcp_${N} e);'."\n",'','','');
+
+$evalf_func_interface=generate(' function_options & evalf_func(evalf_funcp_${N} ef);'."\n",'','','');
+
+$conjugate_func_interface=generate(' function_options & conjugate_func(conjugate_funcp_${N} d);'."\n",'','','');
+
+$derivative_func_interface=generate(' function_options & derivative_func(derivative_funcp_${N} d);'."\n",'','','');
+
+$series_func_interface=generate(' function_options & series_func(series_funcp_${N} s);'."\n",'','','');
+
+$print_func_interface=generate(
+ <<'END_OF_PRINT_FUNC_INTERFACE','','','');
+ template <class Ctx> function_options & print_func(print_funcp_${N} p)
+ {
+ test_and_set_nparams(${N});
+ set_print_func(Ctx::get_class_info_static().options.get_id(), print_funcp(p));
+ return *this;
+ }
+END_OF_PRINT_FUNC_INTERFACE
$constructors_interface=generate(
' function(unsigned ser, ${SEQ1});'."\n",
-'ex const & param${N}','');
-
-$register_new_interface=generate(
-' static unsigned register_new(char const * nm, eval_funcp_${N} e,'."\n".
-' evalf_funcp_${N} ef=0, diff_funcp_${N} d=0, series_funcp_${N} s=0);'.
-"\n",'','');
+'const ex & param${N}','','');
$constructors_implementation=generate(
- <<'END_OF_CONSTRUCTORS_IMPLEMENTATION','ex const & param${N}','param${N}');
+ <<'END_OF_CONSTRUCTORS_IMPLEMENTATION','const ex & param${N}','param${N}','');
function::function(unsigned ser, ${SEQ1})
- : exprseq(${SEQ2}), serial(ser)
+ : exprseq(${SEQ2}), serial(ser)
{
- debugmsg(\"function constructor from unsigned,${N}*ex\",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ tinfo_key = TINFO_function;
}
END_OF_CONSTRUCTORS_IMPLEMENTATION
$eval_switch_statement=generate(
- <<'END_OF_EVAL_SWITCH_STATEMENT','eseq[${N}-1]','');
- case ${N}:
- return ((eval_funcp_${N})(registered_functions()[serial].e))(${SEQ1});
- break;
+ <<'END_OF_EVAL_SWITCH_STATEMENT','seq[${N}-1]','','');
+ case ${N}:
+ eval_result = ((eval_funcp_${N})(opt.eval_f))(${SEQ1});
+ break;
END_OF_EVAL_SWITCH_STATEMENT
$evalf_switch_statement=generate(
- <<'END_OF_EVALF_SWITCH_STATEMENT','eseq[${N}-1]','');
- case ${N}:
- return ((evalf_funcp_${N})(registered_functions()[serial].ef))(${SEQ1});
- break;
+ <<'END_OF_EVALF_SWITCH_STATEMENT','eseq[${N}-1]','','');
+ case ${N}:
+ return ((evalf_funcp_${N})(opt.evalf_f))(${SEQ1});
END_OF_EVALF_SWITCH_STATEMENT
+$conjugate_switch_statement=generate(
+ <<'END_OF_DIFF_SWITCH_STATEMENT','seq[${N}-1]','','');
+ case ${N}:
+ return ((conjugate_funcp_${N})(opt.conjugate_f))(${SEQ1});
+END_OF_DIFF_SWITCH_STATEMENT
+
$diff_switch_statement=generate(
- <<'END_OF_DIFF_SWITCH_STATEMENT','seq[${N}-1]','');
- case ${N}:
- return ((diff_funcp_${N})(registered_functions()[serial].d))(${SEQ1},diff_param);
- break;
+ <<'END_OF_DIFF_SWITCH_STATEMENT','seq[${N}-1]','','');
+ case ${N}:
+ return ((derivative_funcp_${N})(opt.derivative_f))(${SEQ1},diff_param);
END_OF_DIFF_SWITCH_STATEMENT
$series_switch_statement=generate(
- <<'END_OF_SERIES_SWITCH_STATEMENT','seq[${N}-1]','');
- case ${N}:
- return ((series_funcp_${N})(registered_functions()[serial].s))(${SEQ1},s,point,order);
- break;
+ <<'END_OF_SERIES_SWITCH_STATEMENT','seq[${N}-1]','','');
+ case ${N}:
+ try {
+ res = ((series_funcp_${N})(opt.series_f))(${SEQ1},r,order,options);
+ } catch (do_taylor) {
+ res = basic::series(r, order, options);
+ }
+ return res;
END_OF_SERIES_SWITCH_STATEMENT
-$register_new_implementation=generate(
- <<'END_OF_REGISTER_NEW_IMPLEMENTATION','','');
-unsigned function::register_new(char const * nm, eval_funcp_${N} e,
- evalf_funcp_${N} ef, diff_funcp_${N} d, series_funcp_${N} s)
+$print_switch_statement=generate(
+ <<'END_OF_PRINT_SWITCH_STATEMENT','seq[${N}-1]','','');
+ case ${N}:
+ ((print_funcp_${N})(pdt[id]))(${SEQ1}, c);
+ break;
+END_OF_PRINT_SWITCH_STATEMENT
+
+$eval_func_implementation=generate(
+ <<'END_OF_EVAL_FUNC_IMPLEMENTATION','','','');
+function_options & function_options::eval_func(eval_funcp_${N} e)
+{
+ test_and_set_nparams(${N});
+ eval_f = eval_funcp(e);
+ return *this;
+}
+END_OF_EVAL_FUNC_IMPLEMENTATION
+
+$evalf_func_implementation=generate(
+ <<'END_OF_EVALF_FUNC_IMPLEMENTATION','','','');
+function_options & function_options::evalf_func(evalf_funcp_${N} ef)
+{
+ test_and_set_nparams(${N});
+ evalf_f = evalf_funcp(ef);
+ return *this;
+}
+END_OF_EVALF_FUNC_IMPLEMENTATION
+
+$conjugate_func_implementation=generate(
+ <<'END_OF_CONJUGATE_FUNC_IMPLEMENTATION','','','');
+function_options & function_options::conjugate_func(conjugate_funcp_${N} c)
{
- registered_function_info rfi={nm,${N},0,eval_funcp(e),
- evalf_funcp(ef),diff_funcp(d),series_funcp(s)};
- registered_functions().push_back(rfi);
- return registered_functions().size()-1;
+ test_and_set_nparams(${N});
+ conjugate_f = conjugate_funcp(c);
+ return *this;
}
-END_OF_REGISTER_NEW_IMPLEMENTATION
+END_OF_CONJUGATE_FUNC_IMPLEMENTATION
+
+$derivative_func_implementation=generate(
+ <<'END_OF_DERIVATIVE_FUNC_IMPLEMENTATION','','','');
+function_options & function_options::derivative_func(derivative_funcp_${N} d)
+{
+ test_and_set_nparams(${N});
+ derivative_f = derivative_funcp(d);
+ return *this;
+}
+END_OF_DERIVATIVE_FUNC_IMPLEMENTATION
+
+$series_func_implementation=generate(
+ <<'END_OF_SERIES_FUNC_IMPLEMENTATION','','','');
+function_options & function_options::series_func(series_funcp_${N} s)
+{
+ test_and_set_nparams(${N});
+ series_f = series_funcp(s);
+ return *this;
+}
+END_OF_SERIES_FUNC_IMPLEMENTATION
$interface=<<END_OF_INTERFACE;
/** \@file function.h
*
- * Interface to abstract class function (new function concept).
- *
+ * Interface to class of symbolic functions. */
+
+/*
* This file was generated automatically by function.pl.
* Please do not modify it directly, edit the perl script instead!
* function.pl options: \$maxargs=${maxargs}
*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2004 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
#include <string>
#include <vector>
-#include <ginac/exprseq.h>
-class function;
+// CINT needs <algorithm> to work properly with <vector>
+#include <algorithm>
+
+#include "exprseq.h"
// the following lines have been generated for max. ${maxargs} parameters
$declare_function_macro
// end of generated lines
-#define REGISTER_FUNCTION(NAME,E,EF,D,S) \\
-unsigned function_index_##NAME=function::register_new(#NAME,E,EF,D,S);
-
-#define BEGIN_TYPECHECK \\
-bool automatic_typecheck=true;
-
-#define TYPECHECK(VAR,TYPE) \\
-if (!is_ex_exactly_of_type(VAR,TYPE)) { \\
- automatic_typecheck=false; \\
-} else
+#define REGISTER_FUNCTION(NAME,OPT) \\
+unsigned NAME##_SERIAL::serial = \\
+ GiNaC::function::register_new(GiNaC::function_options(#NAME).OPT);
-#define TYPECHECK_INTEGER(VAR) \\
-if (!(VAR).info(info_flags::integer)) { \\
- automatic_typecheck=false; \\
-} else
+namespace GiNaC {
-#define END_TYPECHECK(RV) \\
-{} \\
-if (!automatic_typecheck) { \\
- return RV.hold(); \\
-}
+class function;
+class symmetry;
typedef ex (* eval_funcp)();
typedef ex (* evalf_funcp)();
-typedef ex (* diff_funcp)();
+typedef ex (* conjugate_funcp)();
+typedef ex (* derivative_funcp)();
typedef ex (* series_funcp)();
+typedef void (* print_funcp)();
// the following lines have been generated for max. ${maxargs} parameters
$typedef_eval_funcp
$typedef_evalf_funcp
-$typedef_diff_funcp
+$typedef_conjugate_funcp
+$typedef_derivative_funcp
$typedef_series_funcp
+$typedef_print_funcp
// end of generated lines
-struct registered_function_info {
- char const * name;
- unsigned nparams;
- unsigned options;
- eval_funcp e;
- evalf_funcp ef;
- diff_funcp d;
- series_funcp s;
+// Alternatively, an exvector may be passed into the static function, instead
+// of individual ex objects. Then, the number of arguments is not limited.
+typedef ex (* eval_funcp_exvector)(const exvector &);
+typedef ex (* evalf_funcp_exvector)(const exvector &);
+typedef ex (* conjugate_funcp_exvector)(const exvector &);
+typedef ex (* derivative_funcp_exvector)(const exvector &, unsigned);
+typedef ex (* series_funcp_exvector)(const exvector &, const relational &, int, unsigned);
+typedef void (* print_funcp_exvector)(const exvector &, const print_context &);
+
+
+class function_options
+{
+ friend class function;
+ friend class fderivative;
+public:
+ function_options();
+ function_options(std::string const & n, std::string const & tn=std::string());
+ ~function_options();
+ void initialize();
+
+ function_options & dummy() { return *this; }
+ function_options & set_name(std::string const & n, std::string const & tn=std::string());
+ function_options & latex_name(std::string const & tn);
+// the following lines have been generated for max. ${maxargs} parameters
+$eval_func_interface
+$evalf_func_interface
+$conjugate_func_interface
+$derivative_func_interface
+$series_func_interface
+$print_func_interface
+// end of generated lines
+ function_options & eval_func(eval_funcp_exvector e);
+ function_options & evalf_func(evalf_funcp_exvector ef);
+ function_options & conjugate_func(conjugate_funcp_exvector d);
+ function_options & derivative_func(derivative_funcp_exvector d);
+ function_options & series_func(series_funcp_exvector s);
+
+ template <class Ctx> function_options & print_func(print_funcp_exvector p)
+ {
+ print_use_exvector_args = true;
+ set_print_func(Ctx::get_class_info_static().options.get_id(), print_funcp(p));
+ return *this;
+ }
+
+ function_options & set_return_type(unsigned rt, unsigned rtt=0);
+ function_options & do_not_evalf_params();
+ function_options & remember(unsigned size, unsigned assoc_size=0,
+ unsigned strategy=remember_strategies::delete_never);
+ function_options & overloaded(unsigned o);
+ function_options & set_symmetry(const symmetry & s);
+
+ std::string get_name() const { return name; }
+ unsigned get_nparams() const { return nparams; }
+
+protected:
+ bool has_derivative() const { return derivative_f != NULL; }
+ void test_and_set_nparams(unsigned n);
+ void set_print_func(unsigned id, print_funcp f);
+
+ std::string name;
+ std::string TeX_name;
+
+ unsigned nparams;
+
+ eval_funcp eval_f;
+ evalf_funcp evalf_f;
+ conjugate_funcp conjugate_f;
+ derivative_funcp derivative_f;
+ series_funcp series_f;
+ std::vector<print_funcp> print_dispatch_table;
+
+ bool evalf_params_first;
+
+ bool use_return_type;
+ unsigned return_type;
+ unsigned return_type_tinfo;
+
+ bool use_remember;
+ unsigned remember_size;
+ unsigned remember_assoc_size;
+ unsigned remember_strategy;
+
+ bool eval_use_exvector_args;
+ bool evalf_use_exvector_args;
+ bool conjugate_use_exvector_args;
+ bool derivative_use_exvector_args;
+ bool series_use_exvector_args;
+ bool print_use_exvector_args;
+
+ unsigned functions_with_same_name;
+
+ ex symtree;
};
+
+/** Exception class thrown by classes which provide their own series expansion
+ * to signal that ordinary Taylor expansion is safe. */
+class do_taylor {};
+
+
/** The class function is used to implement builtin functions like sin, cos...
- and user defined functions */
+ and user defined functions */
class function : public exprseq
{
- friend void ginsh_get_ginac_functions(void);
+ GINAC_DECLARE_REGISTERED_CLASS(function, exprseq)
-// member functions
+ // CINT has a linking problem
+#ifndef __MAKECINT__
+ friend void ginsh_get_ginac_functions();
+#endif // def __MAKECINT__
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- function();
- ~function();
- function(function const & other);
- function const & operator=(function const & other);
-protected:
- void copy(function const & other);
- void destroy(bool call_parent);
+ friend class remember_table_entry;
+ // friend class remember_table_list;
+ // friend class remember_table;
+
+// member functions
- // other constructors
+ // other constructors
public:
- function(unsigned ser);
- // the following lines have been generated for max. ${maxargs} parameters
+ function(unsigned ser);
+ // the following lines have been generated for max. ${maxargs} parameters
$constructors_interface
- // end of generated lines
- function(unsigned ser, exprseq const & es);
- function(unsigned ser, exvector const & v, bool discardable=0);
- function(unsigned ser, exvector * vp); // vp will be deleted
+ // end of generated lines
+ function(unsigned ser, const exprseq & es);
+ function(unsigned ser, const exvector & v, bool discardable = false);
+ function(unsigned ser, std::auto_ptr<exvector> vp);
- // functions overriding virtual functions from bases classes
+ // functions overriding virtual functions from base classes
public:
- basic * duplicate() const;
- void printraw(ostream & os) const;
- void print(ostream & os, unsigned upper_precedence=0) const;
- void printtree(ostream & os, unsigned indent) const;
- void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
- ex expand(unsigned options=0) 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 thisexprseq(exvector const & v) const;
- ex thisexprseq(exvector * vp) const;
+ void print(const print_context & c, unsigned level = 0) const;
+ unsigned precedence() const {return 70;}
+ ex expand(unsigned options=0) const;
+ ex eval(int level=0) const;
+ ex evalf(int level=0) const;
+ unsigned calchash() const;
+ ex series(const relational & r, int order, unsigned options = 0) const;
+ ex thiscontainer(const exvector & v) const;
+ ex thiscontainer(std::auto_ptr<exvector> vp) const;
+ ex conjugate() const;
protected:
- int compare_same_type(basic const & other) const;
- bool is_equal_same_type(basic const & other) const;
- unsigned return_type(void) const;
- unsigned return_type_tinfo(void) const;
-
- // new virtual functions which can be overridden by derived classes
- // none
-
- // non-virtual functions in this class
+ ex derivative(const symbol & s) const;
+ bool is_equal_same_type(const basic & other) const;
+ bool match_same_type(const basic & other) const;
+ unsigned return_type() const;
+ unsigned return_type_tinfo() const;
+
+ // new virtual functions which can be overridden by derived classes
+ // none
+
+ // non-virtual functions in this class
protected:
- ex pdiff(unsigned diff_param) const; // partial differentiation
- static vector<registered_function_info> & registered_functions(void);
+ ex pderivative(unsigned diff_param) const; // partial differentiation
+ static std::vector<function_options> & registered_functions();
+ bool lookup_remember_table(ex & result) const;
+ void store_remember_table(ex const & result) const;
public:
- // the following lines have been generated for max. ${maxargs} parameters
-$register_new_interface
- // end of generated lines
- unsigned getserial(void) const {return serial;}
-
+ static unsigned register_new(function_options const & opt);
+ static unsigned current_serial;
+ static unsigned find_function(const std::string &name, unsigned nparams);
+ unsigned get_serial() const {return serial;}
+ std::string get_name() const;
+
// member variables
protected:
- unsigned serial;
+ unsigned serial;
};
-// utility macros
+// utility functions/macros
-#define is_ex_the_function(OBJ, FUNCNAME) \\
- (is_ex_exactly_of_type(OBJ, function) && static_cast<function *>(OBJ.bp)->getserial() == function_index_##FUNCNAME)
+/** Specialization of is_exactly_a<function>(obj) for objects of type function. */
+template<> inline bool is_exactly_a<function>(const basic & obj)
+{
+ return obj.tinfo()==TINFO_function;
+}
-// global constants
+template <typename T>
+inline bool is_the_function(const ex & x)
+{
+ return is_exactly_a<function>(x)
+ && ex_to<function>(x).get_serial() == T::serial;
+}
-extern const function some_function;
-extern type_info const & typeid_function;
+// Check whether OBJ is the specified symbolic function.
+#define is_ex_the_function(OBJ, FUNCNAME) (GiNaC::is_the_function<FUNCNAME##_SERIAL>(OBJ))
+
+} // namespace GiNaC
#endif // ndef __GINAC_FUNCTION_H__
$implementation=<<END_OF_IMPLEMENTATION;
/** \@file function.cpp
*
- * Implementation of class function.
- *
+ * Implementation of class of symbolic functions. */
+
+/*
* This file was generated automatically by function.pl.
* Please do not modify it directly, edit the perl script instead!
* function.pl options: \$maxargs=${maxargs}
*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2004 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
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <iostream>
#include <string>
#include <stdexcept>
+#include <list>
#include "function.h"
+#include "operators.h"
+#include "fderivative.h"
#include "ex.h"
+#include "lst.h"
+#include "symmetry.h"
+#include "print.h"
+#include "archive.h"
+#include "inifcns.h"
+#include "tostring.h"
+#include "utils.h"
+#include "remember.h"
+
+namespace GiNaC {
//////////
-// default constructor, destructor, copy constructor assignment operator and helpers
+// helper class function_options
//////////
-// public
-
-function::function() : serial(0)
+function_options::function_options()
{
- debugmsg("function default constructor",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ initialize();
}
-function::~function()
+function_options::function_options(std::string const & n, std::string const & tn)
{
- debugmsg("function destructor",LOGLEVEL_DESTRUCT);
- destroy(0);
+ initialize();
+ set_name(n, tn);
}
-function::function(function const & other)
+function_options::~function_options()
{
- debugmsg("function copy constructor",LOGLEVEL_CONSTRUCT);
- copy(other);
+ // nothing to clean up at the moment
}
-function const & function::operator=(function const & other)
+void function_options::initialize()
{
- debugmsg("function operator=",LOGLEVEL_ASSIGNMENT);
- if (this != &other) {
- destroy(1);
- copy(other);
- }
- return *this;
+ set_name("unnamed_function", "\\\\mbox{unnamed}");
+ nparams = 0;
+ eval_f = evalf_f = conjugate_f = derivative_f = series_f = 0;
+ evalf_params_first = true;
+ use_return_type = false;
+ eval_use_exvector_args = false;
+ evalf_use_exvector_args = false;
+ conjugate_use_exvector_args = false;
+ derivative_use_exvector_args = false;
+ series_use_exvector_args = false;
+ print_use_exvector_args = false;
+ use_remember = false;
+ functions_with_same_name = 1;
+ symtree = 0;
}
-// protected
-
-void function::copy(function const & other)
+function_options & function_options::set_name(std::string const & n,
+ std::string const & tn)
{
- exprseq::copy(other);
- serial=other.serial;
+ name = n;
+ if (tn==std::string())
+ TeX_name = "\\\\mbox{"+name+"}";
+ else
+ TeX_name = tn;
+ return *this;
}
-void function::destroy(bool call_parent)
+function_options & function_options::latex_name(std::string const & tn)
{
- if (call_parent) exprseq::destroy(call_parent);
+ TeX_name = tn;
+ return *this;
}
-//////////
-// other constructors
-//////////
+// the following lines have been generated for max. ${maxargs} parameters
+$eval_func_implementation
+$evalf_func_implementation
+$conjugate_func_implementation
+$derivative_func_implementation
+$series_func_implementation
+// end of generated lines
-// public
+function_options& function_options::eval_func(eval_funcp_exvector e)
+{
+ eval_use_exvector_args = true;
+ eval_f = eval_funcp(e);
+ return *this;
+}
+function_options& function_options::evalf_func(evalf_funcp_exvector ef)
+{
+ evalf_use_exvector_args = true;
+ evalf_f = evalf_funcp(ef);
+ return *this;
+}
+function_options& function_options::conjugate_func(conjugate_funcp_exvector c)
+{
+ conjugate_use_exvector_args = true;
+ conjugate_f = conjugate_funcp(c);
+ return *this;
+}
+function_options& function_options::derivative_func(derivative_funcp_exvector d)
+{
+ derivative_use_exvector_args = true;
+ derivative_f = derivative_funcp(d);
+ return *this;
+}
+function_options& function_options::series_func(series_funcp_exvector s)
+{
+ series_use_exvector_args = true;
+ series_f = series_funcp(s);
+ return *this;
+}
-function::function(unsigned ser) : serial(ser)
+function_options & function_options::set_return_type(unsigned rt, unsigned rtt)
{
- debugmsg("function constructor from unsigned",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ use_return_type = true;
+ return_type = rt;
+ return_type_tinfo = rtt;
+ return *this;
}
-// the following lines have been generated for max. ${maxargs} parameters
-$constructors_implementation
-// end of generated lines
+function_options & function_options::do_not_evalf_params()
+{
+ evalf_params_first = false;
+ return *this;
+}
+
+function_options & function_options::remember(unsigned size,
+ unsigned assoc_size,
+ unsigned strategy)
+{
+ use_remember = true;
+ remember_size = size;
+ remember_assoc_size = assoc_size;
+ remember_strategy = strategy;
+ return *this;
+}
-function::function(unsigned ser, exprseq const & es) : exprseq(es), serial(ser)
+function_options & function_options::overloaded(unsigned o)
{
- debugmsg("function constructor from unsigned,exprseq",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ functions_with_same_name = o;
+ return *this;
}
-function::function(unsigned ser, exvector const & v, bool discardable)
- : exprseq(v,discardable), serial(ser)
+function_options & function_options::set_symmetry(const symmetry & s)
+{
+ symtree = s;
+ return *this;
+}
+
+void function_options::test_and_set_nparams(unsigned n)
{
- debugmsg("function constructor from string,exvector,bool",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ if (nparams==0) {
+ nparams = n;
+ } else if (nparams!=n) {
+ // we do not throw an exception here because this code is
+ // usually executed before main(), so the exception could not
+ // be caught anyhow
+ std::cerr << "WARNING: " << name << "(): number of parameters ("
+ << n << ") differs from number set before ("
+ << nparams << ")" << std::endl;
+ }
}
-function::function(unsigned ser, exvector * vp)
- : exprseq(vp), serial(ser)
+void function_options::set_print_func(unsigned id, print_funcp f)
{
- debugmsg("function constructor from unsigned,exvector *",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_function;
+ if (id >= print_dispatch_table.size())
+ print_dispatch_table.resize(id + 1);
+ print_dispatch_table[id] = f;
}
+/** This can be used as a hook for external applications. */
+unsigned function::current_serial = 0;
+
+
+GINAC_IMPLEMENT_REGISTERED_CLASS(function, exprseq)
+
//////////
-// functions overriding virtual functions from bases classes
+// default constructor
//////////
// public
-basic * function::duplicate() const
+function::function() : serial(0)
{
- debugmsg("function duplicate",LOGLEVEL_DUPLICATE);
- return new function(*this);
+ tinfo_key = TINFO_function;
}
-void function::printraw(ostream & os) const
-{
- debugmsg("function printraw",LOGLEVEL_PRINT);
+//////////
+// other constructors
+//////////
- ASSERT(serial<registered_functions().size());
+// public
- os << "function(name=" << registered_functions()[serial].name;
- for (exvector::const_iterator it=seq.begin(); it!=seq.end(); ++it) {
- os << ",";
- (*it).bp->print(os);
- }
- os << ")";
+function::function(unsigned ser) : serial(ser)
+{
+ tinfo_key = TINFO_function;
}
-void function::print(ostream & os, unsigned upper_precedence) const
+// the following lines have been generated for max. ${maxargs} parameters
+$constructors_implementation
+// end of generated lines
+
+function::function(unsigned ser, const exprseq & es) : exprseq(es), serial(ser)
{
- debugmsg("function print",LOGLEVEL_PRINT);
+ tinfo_key = TINFO_function;
- ASSERT(serial<registered_functions().size());
+ // Force re-evaluation even if the exprseq was already evaluated
+ // (the exprseq copy constructor copies the flags)
+ clearflag(status_flags::evaluated);
+}
- os << registered_functions()[serial].name;
- printseq(os,'(',',',')',exprseq::precedence,function::precedence);
+function::function(unsigned ser, const exvector & v, bool discardable)
+ : exprseq(v,discardable), serial(ser)
+{
+ tinfo_key = TINFO_function;
}
-void function::printtree(ostream & os, unsigned indent) const
+function::function(unsigned ser, std::auto_ptr<exvector> vp)
+ : exprseq(vp), serial(ser)
{
- debugmsg("function printtree",LOGLEVEL_PRINT);
+ tinfo_key = TINFO_function;
+}
- ASSERT(serial<registered_functions().size());
+//////////
+// archiving
+//////////
- os << string(indent,' ') << "function "
- << registered_functions()[serial].name
- << ", hash=" << hashvalue << " (0x" << hex << hashvalue << dec << ")"
- << ", flags=" << flags
- << ", nops=" << nops() << endl;
- for (int i=0; i<nops(); ++i) {
- seq[i].printtree(os,indent+delta_indent);
- }
- os << string(indent+delta_indent,' ') << "=====" << endl;
+/** Construct object from archive_node. */
+function::function(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst)
+{
+ // Find serial number by function name
+ std::string s;
+ if (n.find_string("name", s)) {
+ unsigned int ser = 0;
+ std::vector<function_options>::const_iterator i = registered_functions().begin(), iend = registered_functions().end();
+ while (i != iend) {
+ if (s == i->name) {
+ serial = ser;
+ return;
+ }
+ ++i; ++ser;
+ }
+ throw (std::runtime_error("unknown function '" + s + "' in archive"));
+ } else
+ throw (std::runtime_error("unnamed function in archive"));
}
-void function::printcsrc(ostream & os, unsigned type, unsigned upper_precedence) const
+/** Unarchive the object. */
+ex function::unarchive(const archive_node &n, lst &sym_lst)
{
- debugmsg("function print csrc",LOGLEVEL_PRINT);
+ return (new function(n, sym_lst))->setflag(status_flags::dynallocated);
+}
- ASSERT(serial<registered_functions().size());
+/** Archive the object. */
+void function::archive(archive_node &n) const
+{
+ inherited::archive(n);
+ GINAC_ASSERT(serial < registered_functions().size());
+ n.add_string("name", registered_functions()[serial].name);
+}
- // Print function name in lowercase
- string lname;
- lname=registered_functions()[serial].name;
- for (unsigned i=0; i<lname.size(); i++)
- lname[i] = tolower(lname[i]);
- os << lname << "(";
+//////////
+// functions overriding virtual functions from base classes
+//////////
- // Print arguments, separated by commas
- exvector::const_iterator it = seq.begin();
- exvector::const_iterator itend = seq.end();
- while (it != itend) {
- it->bp->printcsrc(os, type, 0);
- it++;
- if (it != itend)
- os << ",";
- }
- os << ")";
+// public
+
+void function::print(const print_context & c, unsigned level) const
+{
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+ const std::vector<print_funcp> &pdt = opt.print_dispatch_table;
+
+ // Dynamically dispatch on print_context type
+ const print_context_class_info *pc_info = &c.get_class_info();
+
+next_context:
+ unsigned id = pc_info->options.get_id();
+ if (id >= pdt.size() || pdt[id] == NULL) {
+
+ // Method not found, try parent print_context class
+ const print_context_class_info *parent_pc_info = pc_info->get_parent();
+ if (parent_pc_info) {
+ pc_info = parent_pc_info;
+ goto next_context;
+ }
+
+ // Method still not found, use default output
+ if (is_a<print_tree>(c)) {
+
+ c.s << std::string(level, ' ') << class_name() << " "
+ << opt.name << " @" << this
+ << std::hex << ", hash=0x" << hashvalue << ", flags=0x" << flags << std::dec
+ << ", nops=" << nops()
+ << std::endl;
+ unsigned delta_indent = static_cast<const print_tree &>(c).delta_indent;
+ for (size_t i=0; i<seq.size(); ++i)
+ seq[i].print(c, level + delta_indent);
+ c.s << std::string(level + delta_indent, ' ') << "=====" << std::endl;
+
+ } else if (is_a<print_csrc>(c)) {
+
+ // Print function name in lowercase
+ std::string lname = opt.name;
+ size_t num = lname.size();
+ for (size_t i=0; i<num; i++)
+ lname[i] = tolower(lname[i]);
+ c.s << lname;
+ printseq(c, '(', ',', ')', exprseq::precedence(), function::precedence());
+
+ } else if (is_a<print_latex>(c)) {
+ c.s << opt.TeX_name;
+ printseq(c, '(', ',', ')', exprseq::precedence(), function::precedence());
+ } else {
+ c.s << opt.name;
+ printseq(c, '(', ',', ')', exprseq::precedence(), function::precedence());
+ }
+
+ } else {
+
+ // Method found, call it
+ current_serial = serial;
+ if (opt.print_use_exvector_args)
+ ((print_funcp_exvector)pdt[id])(seq, c);
+ else switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
+${print_switch_statement}
+ // end of generated lines
+ default:
+ throw(std::logic_error("function::print(): invalid nparams"));
+ }
+ }
}
ex function::expand(unsigned options) const
{
- return this->setflag(status_flags::expanded);
+ // Only expand arguments when asked to do so
+ if (options & expand_options::expand_function_args)
+ return inherited::expand(options);
+ else
+ return (options == 0) ? setflag(status_flags::expanded) : *this;
}
ex function::eval(int level) const
{
- ASSERT(serial<registered_functions().size());
-
- exvector eseq=evalchildren(level);
-
- if (registered_functions()[serial].e==0) {
- return function(serial,eseq).hold();
- }
- switch (registered_functions()[serial].nparams) {
- // the following lines have been generated for max. ${maxargs} parameters
+ if (level>1) {
+ // first evaluate children, then we will end up here again
+ return function(serial,evalchildren(level));
+ }
+
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ // Canonicalize argument order according to the symmetry properties
+ if (seq.size() > 1 && !(opt.symtree.is_zero())) {
+ exvector v = seq;
+ GINAC_ASSERT(is_a<symmetry>(opt.symtree));
+ int sig = canonicalize(v.begin(), ex_to<symmetry>(opt.symtree));
+ if (sig != INT_MAX) {
+ // Something has changed while sorting arguments, more evaluations later
+ if (sig == 0)
+ return _ex0;
+ return ex(sig) * thiscontainer(v);
+ }
+ }
+
+ if (opt.eval_f==0) {
+ return this->hold();
+ }
+
+ bool use_remember = opt.use_remember;
+ ex eval_result;
+ if (use_remember && lookup_remember_table(eval_result)) {
+ return eval_result;
+ }
+ current_serial = serial;
+ if (opt.eval_use_exvector_args)
+ eval_result = ((eval_funcp_exvector)(opt.eval_f))(seq);
+ else
+ switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
${eval_switch_statement}
- // end of generated lines
- }
- throw(std::logic_error("function::eval(): invalid nparams"));
+ // end of generated lines
+ default:
+ throw(std::logic_error("function::eval(): invalid nparams"));
+ }
+ if (use_remember) {
+ store_remember_table(eval_result);
+ }
+ return eval_result;
}
ex function::evalf(int level) const
{
- ASSERT(serial<registered_functions().size());
-
- exvector eseq=evalfchildren(level);
-
- if (registered_functions()[serial].ef==0) {
- return function(serial,eseq).hold();
- }
- switch (registered_functions()[serial].nparams) {
- // the following lines have been generated for max. ${maxargs} parameters
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ // Evaluate children first
+ exvector eseq;
+ if (level == 1 || !(opt.evalf_params_first))
+ eseq = seq;
+ else if (level == -max_recursion_level)
+ throw(std::runtime_error("max recursion level reached"));
+ else {
+ eseq.reserve(seq.size());
+ --level;
+ exvector::const_iterator it = seq.begin(), itend = seq.end();
+ while (it != itend) {
+ eseq.push_back(it->evalf(level));
+ ++it;
+ }
+ }
+
+ if (opt.evalf_f==0) {
+ return function(serial,eseq).hold();
+ }
+ current_serial = serial;
+ if (opt.evalf_use_exvector_args)
+ return ((evalf_funcp_exvector)(opt.evalf_f))(seq);
+ switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
${evalf_switch_statement}
- // end of generated lines
- }
- throw(std::logic_error("function::evalf(): invalid nparams"));
+ // end of generated lines
+ }
+ throw(std::logic_error("function::evalf(): invalid nparams"));
+}
+
+unsigned function::calchash() const
+{
+ unsigned v = golden_ratio_hash(golden_ratio_hash(tinfo()) ^ serial);
+ for (size_t i=0; i<nops(); i++) {
+ v = rotate_left(v);
+ v ^= this->op(i).gethash();
+ }
+
+ if (flags & status_flags::evaluated) {
+ setflag(status_flags::hash_calculated);
+ hashvalue = v;
+ }
+ return v;
}
-ex function::thisexprseq(exvector const & v) const
+ex function::thiscontainer(const exvector & v) const
{
- return function(serial,v);
+ return function(serial, v);
}
-ex function::thisexprseq(exvector * vp) const
+ex function::thiscontainer(std::auto_ptr<exvector> vp) const
{
- return function(serial,vp);
+ return function(serial, vp);
}
/** Implementation of ex::series for functions.
* \@see ex::series */
-ex function::series(symbol const & s, ex const & point, int order) const
+ex function::series(const relational & r, int order, unsigned options) const
{
- ASSERT(serial<registered_functions().size());
-
- if (registered_functions()[serial].s==0) {
- return basic::series(s, point, order);
- }
- switch (registered_functions()[serial].nparams) {
- // the following lines have been generated for max. ${maxargs} parameters
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ if (opt.series_f==0) {
+ return basic::series(r, order);
+ }
+ ex res;
+ current_serial = serial;
+ if (opt.series_use_exvector_args) {
+ try {
+ res = ((series_funcp_exvector)(opt.series_f))(seq, r, order, options);
+ } catch (do_taylor) {
+ res = basic::series(r, order, options);
+ }
+ return res;
+ }
+ switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
${series_switch_statement}
- // end of generated lines
- }
- throw(std::logic_error("function::series(): invalid nparams"));
+ // end of generated lines
+ }
+ throw(std::logic_error("function::series(): invalid nparams"));
+}
+
+/** Implementation of ex::conjugate for functions. */
+ex function::conjugate() const
+{
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options & opt = registered_functions()[serial];
+
+ if (opt.conjugate_f==0) {
+ return exprseq::conjugate();
+ }
+
+ if (opt.conjugate_use_exvector_args) {
+ return ((conjugate_funcp_exvector)(opt.conjugate_f))(seq);
+ }
+
+ switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
+${conjugate_switch_statement}
+ // end of generated lines
+ }
+ throw(std::logic_error("function::conjugate(): invalid nparams"));
}
// protected
-int function::compare_same_type(basic const & other) const
+/** Implementation of ex::diff() for functions. It applies the chain rule,
+ * except for the Order term function.
+ * \@see ex::diff */
+ex function::derivative(const symbol & s) const
+{
+ ex result;
+
+ if (serial == Order_SERIAL::serial) {
+ // Order Term function only differentiates the argument
+ return Order(seq[0].diff(s));
+ } else {
+ // Chain rule
+ ex arg_diff;
+ size_t num = seq.size();
+ for (size_t i=0; i<num; i++) {
+ arg_diff = seq[i].diff(s);
+ // We apply the chain rule only when it makes sense. This is not
+ // just for performance reasons but also to allow functions to
+ // throw when differentiated with respect to one of its arguments
+ // without running into trouble with our automatic full
+ // differentiation:
+ if (!arg_diff.is_zero())
+ result += pderivative(i)*arg_diff;
+ }
+ }
+ return result;
+}
+
+int function::compare_same_type(const basic & other) const
{
- ASSERT(is_of_type(other, function));
- function const & o=static_cast<function &>(const_cast<basic &>(other));
+ GINAC_ASSERT(is_a<function>(other));
+ const function & o = static_cast<const function &>(other);
- if (serial!=o.serial) {
- return serial < o.serial ? -1 : 1;
- }
- return exprseq::compare_same_type(o);
+ if (serial != o.serial)
+ return serial < o.serial ? -1 : 1;
+ else
+ return exprseq::compare_same_type(o);
}
-bool function::is_equal_same_type(basic const & other) const
+bool function::is_equal_same_type(const basic & other) const
{
- ASSERT(is_of_type(other, function));
- function const & o=static_cast<function &>(const_cast<basic &>(other));
+ GINAC_ASSERT(is_a<function>(other));
+ const function & o = static_cast<const function &>(other);
- if (serial!=o.serial) return false;
- return exprseq::is_equal_same_type(o);
+ if (serial != o.serial)
+ return false;
+ else
+ return exprseq::is_equal_same_type(o);
}
-unsigned function::return_type(void) const
+bool function::match_same_type(const basic & other) const
{
- if (seq.size()==0) {
- return return_types::commutative;
- }
- return (*seq.begin()).return_type();
+ GINAC_ASSERT(is_a<function>(other));
+ const function & o = static_cast<const function &>(other);
+
+ return serial == o.serial;
}
-
-unsigned function::return_type_tinfo(void) const
+
+unsigned function::return_type() const
{
- if (seq.size()==0) {
- return tinfo_key;
- }
- return (*seq.begin()).return_type_tinfo();
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ if (opt.use_return_type) {
+ // Return type was explicitly specified
+ return opt.return_type;
+ } else {
+ // Default behavior is to use the return type of the first
+ // argument. Thus, exp() of a matrix behaves like a matrix, etc.
+ if (seq.empty())
+ return return_types::commutative;
+ else
+ return seq.begin()->return_type();
+ }
+}
+
+unsigned function::return_type_tinfo() const
+{
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ if (opt.use_return_type) {
+ // Return type was explicitly specified
+ return opt.return_type_tinfo;
+ } else {
+ // Default behavior is to use the return type of the first
+ // argument. Thus, exp() of a matrix behaves like a matrix, etc.
+ if (seq.empty())
+ return tinfo_key;
+ else
+ return seq.begin()->return_type_tinfo();
+ }
}
//////////
// protected
-ex function::pdiff(unsigned diff_param) const // partial differentiation
+ex function::pderivative(unsigned diff_param) const // partial differentiation
{
- ASSERT(serial<registered_functions().size());
-
- if (registered_functions()[serial].d==0) {
- throw(std::logic_error(string("function::pdiff(") + registered_functions()[serial].name + "): no diff function defined"));
- }
- switch (registered_functions()[serial].nparams) {
- // the following lines have been generated for max. ${maxargs} parameters
+ GINAC_ASSERT(serial<registered_functions().size());
+ const function_options &opt = registered_functions()[serial];
+
+ // No derivative defined? Then return abstract derivative object
+ if (opt.derivative_f == NULL)
+ return fderivative(serial, diff_param, seq);
+
+ current_serial = serial;
+ if (opt.derivative_use_exvector_args)
+ return ((derivative_funcp_exvector)(opt.derivative_f))(seq, diff_param);
+ switch (opt.nparams) {
+ // the following lines have been generated for max. ${maxargs} parameters
${diff_switch_statement}
- // end of generated lines
- }
- throw(std::logic_error("function::pdiff(): no diff function defined"));
+ // end of generated lines
+ }
+ throw(std::logic_error("function::pderivative(): no diff function defined"));
}
-vector<registered_function_info> & function::registered_functions(void)
+std::vector<function_options> & function::registered_functions()
{
- static vector<registered_function_info> * rf=new vector<registered_function_info>;
- return *rf;
+ static std::vector<function_options> * rf = new std::vector<function_options>;
+ return *rf;
}
-// public
+bool function::lookup_remember_table(ex & result) const
+{
+ return remember_table::remember_tables()[this->serial].lookup_entry(*this,result);
+}
-// the following lines have been generated for max. ${maxargs} parameters
-$register_new_implementation
-// end of generated lines
+void function::store_remember_table(ex const & result) const
+{
+ remember_table::remember_tables()[this->serial].add_entry(*this,result);
+}
-//////////
-// static member variables
-//////////
+// public
-// none
+unsigned function::register_new(function_options const & opt)
+{
+ size_t same_name = 0;
+ for (size_t i=0; i<registered_functions().size(); ++i) {
+ if (registered_functions()[i].name==opt.name) {
+ ++same_name;
+ }
+ }
+ if (same_name>=opt.functions_with_same_name) {
+ // we do not throw an exception here because this code is
+ // usually executed before main(), so the exception could not
+ // caught anyhow
+ std::cerr << "WARNING: function name " << opt.name
+ << " already in use!" << std::endl;
+ }
+ registered_functions().push_back(opt);
+ if (opt.use_remember) {
+ remember_table::remember_tables().
+ push_back(remember_table(opt.remember_size,
+ opt.remember_assoc_size,
+ opt.remember_strategy));
+ } else {
+ remember_table::remember_tables().push_back(remember_table());
+ }
+ return registered_functions().size()-1;
+}
-//////////
-// global constants
-//////////
+/** Find serial number of function by name and number of parameters.
+ * Throws exception if function was not found. */
+unsigned function::find_function(const std::string &name, unsigned nparams)
+{
+ std::vector<function_options>::const_iterator i = function::registered_functions().begin(), end = function::registered_functions().end();
+ unsigned serial = 0;
+ while (i != end) {
+ if (i->get_name() == name && i->get_nparams() == nparams)
+ return serial;
+ ++i;
+ ++serial;
+ }
+ throw (std::runtime_error("no function '" + name + "' with " + ToString(nparams) + " parameters defined"));
+}
+
+/** Return the print name of the function. */
+std::string function::get_name() const
+{
+ GINAC_ASSERT(serial<registered_functions().size());
+ return registered_functions()[serial].name;
+}
-const function some_function;
-type_info const & typeid_function=typeid(some_function);
+} // namespace GiNaC
END_OF_IMPLEMENTATION
git://www.ginac.de / ginac.git / blobdiff