-#!/usr/bin/perl -w
-
-$maxargs=10;
+$maxargs=13;
sub generate_seq {
my ($seq_template,$n)=@_;
return $res;
}
-sub generate {
- my ($template,$seq_template1,$seq_template2)=@_;
+sub generate_from_to {
+ my ($template,$seq_template1,$seq_template2,$from,$to)=@_;
my ($res,$N,$SEQ);
$res='';
- for ($N=1; $N<=$maxargs; $N++) {
+ for ($N=$from; $N<=$to; $N++) {
$SEQ1=generate_seq($seq_template1,$N);
$SEQ2=generate_seq($seq_template2,$N);
$res .= eval('"' . $template . '"');
return $res;
}
-$declare_function_macro_namespace=generate(
- <<'END_OF_DECLARE_FUNCTION_MACRO_NAMESPACE','const GiNaC::ex & p${N}','p${N}');
+sub generate {
+ my ($template,$seq_template1,$seq_template2)=@_;
+ return generate_from_to($template,$seq_template1,$seq_template2,1,$maxargs);
+}
+
+$declare_function_macro_namespace = <<'END_OF_DECLARE_FUNCTION_1_AND_2P_MACRO_NAMESPACE';
+#define DECLARE_FUNCTION_1P(NAME) \
+extern const unsigned function_index_##NAME; \
+inline GiNaC::function NAME(const GiNaC::ex & p1) { \
+ return GiNaC::function(function_index_##NAME, p1); \
+}
+#define DECLARE_FUNCTION_2P(NAME) \
+extern const unsigned function_index_##NAME; \
+inline GiNaC::function NAME(const GiNaC::ex & p1, const GiNaC::ex & p2) { \
+ return GiNaC::function(function_index_##NAME, p1, p2); \
+}
+
+END_OF_DECLARE_FUNCTION_1_AND_2P_MACRO_NAMESPACE
+
+$declare_function_macro_namespace .= generate_from_to(
+ <<'END_OF_DECLARE_FUNCTION_MACRO_NAMESPACE','const GiNaC::ex & p${N}','p${N}',3,$maxargs);
#define DECLARE_FUNCTION_${N}P(NAME) \\
extern const unsigned function_index_##NAME; \\
inline GiNaC::function NAME(${SEQ1}) { \\
END_OF_DECLARE_FUNCTION_MACRO_NAMESPACE
-$declare_function_macro_no_namespace=generate(
- <<'END_OF_DECLARE_FUNCTION_MACRO_NO_NAMESPACE','const ex & p${N}','p${N}');
+$declare_function_macro_no_namespace = <<'END_OF_DECLARE_FUNCTION_1_AND_2P_MACRO_NO_NAMESPACE';
+#define DECLARE_FUNCTION_1P(NAME) \
+extern const unsigned function_index_##NAME; \
+inline function NAME(const ex & p1) { \
+ return function(function_index_##NAME, p1); \
+}
+#define DECLARE_FUNCTION_2P(NAME) \
+extern const unsigned function_index_##NAME; \
+inline function NAME(const ex & p1, const ex & p2) { \
+ return function(function_index_##NAME, p1, p2); \
+}
+
+END_OF_DECLARE_FUNCTION_1_AND_2P_MACRO_NO_NAMESPACE
+
+$declare_function_macro_no_namespace .= generate_from_to(
+ <<'END_OF_DECLARE_FUNCTION_MACRO_NO_NAMESPACE','const ex & p${N}','p${N}',3,$maxargs);
#define DECLARE_FUNCTION_${N}P(NAME) \\
extern const unsigned function_index_##NAME; \\
inline function NAME(${SEQ1}) { \\
'typedef ex (* evalf_funcp_${N})(${SEQ1});'."\n",
'const ex &','');
-$typedef_diff_funcp=generate(
-'typedef ex (* diff_funcp_${N})(${SEQ1}, unsigned);'."\n",
+$typedef_derivative_funcp=generate(
+'typedef ex (* derivative_funcp_${N})(${SEQ1}, unsigned);'."\n",
'const ex &','');
$typedef_series_funcp=generate(
-'typedef ex (* series_funcp_${N})(${SEQ1}, const symbol &, const ex &, int);'."\n",
+'typedef ex (* series_funcp_${N})(${SEQ1}, const relational &, int, unsigned);'."\n",
'const ex &','');
+$eval_func_interface=generate(' function_options & eval_func(eval_funcp_${N} e);'."\n",'','');
+
+$evalf_func_interface=generate(' function_options & evalf_func(evalf_funcp_${N} ef);'."\n",'','');
+
+$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",'','');
+
$constructors_interface=generate(
' function(unsigned ser, ${SEQ1});'."\n",
'const ex & param${N}','');
-$register_new_interface=generate(
-' static unsigned register_new(const char * nm, eval_funcp_${N} e,'."\n".
-' evalf_funcp_${N} ef=0, diff_funcp_${N} d=0, series_funcp_${N} s=0);'.
-"\n",'','');
-
$constructors_implementation=generate(
<<'END_OF_CONSTRUCTORS_IMPLEMENTATION','const ex & param${N}','param${N}');
function::function(unsigned ser, ${SEQ1})
END_OF_CONSTRUCTORS_IMPLEMENTATION
$eval_switch_statement=generate(
- <<'END_OF_EVAL_SWITCH_STATEMENT','eseq[${N}-1]','');
+ <<'END_OF_EVAL_SWITCH_STATEMENT','seq[${N}-1]','');
case ${N}:
- return ((eval_funcp_${N})(registered_functions()[serial].e))(${SEQ1});
+ eval_result=((eval_funcp_${N})(registered_functions()[serial].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))(${SEQ1});
+ return ((evalf_funcp_${N})(registered_functions()[serial].evalf_f))(${SEQ1});
break;
END_OF_EVALF_SWITCH_STATEMENT
$diff_switch_statement=generate(
<<'END_OF_DIFF_SWITCH_STATEMENT','seq[${N}-1]','');
case ${N}:
- return ((diff_funcp_${N})(registered_functions()[serial].d))(${SEQ1},diff_param);
+ return ((derivative_funcp_${N})(registered_functions()[serial].derivative_f))(${SEQ1},diff_param);
break;
END_OF_DIFF_SWITCH_STATEMENT
<<'END_OF_SERIES_SWITCH_STATEMENT','seq[${N}-1]','');
case ${N}:
try {
- res = ((series_funcp_${N})(registered_functions()[serial].s))(${SEQ1},s,point,order);
+ res = ((series_funcp_${N})(registered_functions()[serial].series_f))(${SEQ1},r,order,options);
} catch (do_taylor) {
- res = basic::series(s, point, order);
+ res = basic::series(r, order, options);
}
return res;
break;
END_OF_SERIES_SWITCH_STATEMENT
-$register_new_implementation=generate(
- <<'END_OF_REGISTER_NEW_IMPLEMENTATION','','');
-unsigned function::register_new(const char * nm, eval_funcp_${N} e,
- evalf_funcp_${N} ef, diff_funcp_${N} d, series_funcp_${N} s)
+$eval_func_implementation=generate(
+ <<'END_OF_EVAL_FUNC_IMPLEMENTATION','','');
+function_options & function_options::eval_func(eval_funcp_${N} e)
{
- registered_function_info rfi={nm,${N},0,eval_funcp(e),
- evalf_funcp(ef),diff_funcp(d),series_funcp(s)};
- registered_functions().push_back(rfi);
- return registered_functions().size()-1;
-}
-END_OF_REGISTER_NEW_IMPLEMENTATION
+ test_and_set_nparams(${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(${N});
+ evalf_f=evalf_funcp(ef);
+ return *this;
+}
+END_OF_EVALF_FUNC_IMPLEMENTATION
+
+$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
#include <string>
#include <vector>
-#ifdef __CINT__
// CINT needs <algorithm> to work properly with <vector>
#include <algorithm>
-#endif // def __CINT__
#include "exprseq.h"
#ifndef NO_NAMESPACE_GINAC
-#define REGISTER_FUNCTION(NAME,E,EF,D,S) \\
-const unsigned function_index_##NAME=GiNaC::function::register_new(#NAME,E,EF,D,S);
+#define REGISTER_FUNCTION(NAME,OPT) \\
+const unsigned function_index_##NAME= \\
+ GiNaC::function::register_new(GiNaC::function_options(#NAME).OPT);
+
+#define REGISTER_FUNCTION_OLD(NAME,E,EF,D,S) \\
+const unsigned function_index_##NAME= \\
+ GiNaC::function::register_new(GiNaC::function_options(#NAME). \\
+ eval_func(E). \\
+ evalf_func(EF). \\
+ derivative_func(D). \\
+ series_func(S));
#else // ndef NO_NAMESPACE_GINAC
-#define REGISTER_FUNCTION(NAME,E,EF,D,S) \\
-const unsigned function_index_##NAME=function::register_new(#NAME,E,EF,D,S);
+#define REGISTER_FUNCTION(NAME,OPT) \\
+const unsigned function_index_##NAME= \\
+ function::register_new(function_options(#NAME).OPT);
+
+#define REGISTER_FUNCTION_OLD(NAME,E,EF,D,S) \\
+const unsigned function_index_##NAME= \\
+ function::register_new(function_options(#NAME). \\
+ eval_func(E). \\
+ evalf_func(EF). \\
+ derivative_func(D). \\
+ series_func(S));
#endif // ndef NO_NAMESPACE_GINAC
typedef ex (* eval_funcp)();
typedef ex (* evalf_funcp)();
-typedef ex (* diff_funcp)();
+typedef ex (* derivative_funcp)();
typedef ex (* series_funcp)();
// the following lines have been generated for max. ${maxargs} parameters
$typedef_eval_funcp
$typedef_evalf_funcp
-$typedef_diff_funcp
+$typedef_derivative_funcp
$typedef_series_funcp
// end of generated lines
-struct registered_function_info {
- const char * name;
+class function_options
+{
+ friend class function;
+public:
+ function_options();
+ function_options(std::string const & n, std::string const & tn=std::string());
+ ~function_options();
+ void initialize(void);
+ function_options & set_name(std::string const & n, std::string const & tn=std::string());
+// the following lines have been generated for max. ${maxargs} parameters
+$eval_func_interface
+$evalf_func_interface
+$derivative_func_interface
+$series_func_interface
+// end of generated lines
+ function_options & set_return_type(unsigned rt, unsigned rtt=0);
+ function_options & do_not_evalf_params(void);
+ function_options & remember(unsigned size, unsigned assoc_size=0,
+ unsigned strategy=remember_strategies::delete_never);
+ function_options & overloaded(unsigned o);
+ void test_and_set_nparams(unsigned n);
+ std::string get_name(void) const { return name; }
+ unsigned get_nparams(void) const { return nparams; }
+
+protected:
+ std::string name;
+ std::string TeX_name;
+
unsigned nparams;
- unsigned options;
- eval_funcp e;
- evalf_funcp ef;
- diff_funcp d;
- series_funcp s;
+
+ eval_funcp eval_f;
+ evalf_funcp evalf_f;
+ derivative_funcp derivative_f;
+ series_funcp series_f;
+
+ 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;
+
+ unsigned functions_with_same_name;
};
/** The class function is used to implement builtin functions like sin, cos...
GINAC_DECLARE_REGISTERED_CLASS(function, exprseq)
// CINT has a linking problem
+#ifndef __MAKECINT__
friend void ginsh_get_ginac_functions(void);
+#endif // def __MAKECINT__
+
+ friend class remember_table_entry;
+ // friend class remember_table_list;
+ // friend class remember_table;
// member functions
// functions overriding virtual functions from bases 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;
+ void printraw(std::ostream & os) const;
+ void print(std::ostream & os, unsigned upper_precedence=0) const;
+ void printtree(std::ostream & os, unsigned indent) const;
+ void printcsrc(std::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 series(const symbol & s, const ex & point, int order) const;
+ ex series(const relational & r, int order, unsigned options = 0) const;
ex thisexprseq(const exvector & v) const;
ex thisexprseq(exvector * vp) const;
protected:
// non-virtual functions in this class
protected:
ex pderivative(unsigned diff_param) const; // partial differentiation
- static vector<registered_function_info> & registered_functions(void);
+ static std::vector<function_options> & registered_functions(void);
+ 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
+ static unsigned register_new(function_options const & opt);
+ static unsigned find_function(const std::string &name, unsigned nparams);
unsigned getserial(void) const {return serial;}
// member variables
unsigned serial;
};
-// utility macros
+// utility functions/macros
+inline const function &ex_to_function(const ex &e)
+{
+ return static_cast<const function &>(*e.bp);
+}
#ifndef NO_NAMESPACE_GINAC
#include <string>
#include <stdexcept>
+#include <list>
#include "function.h"
#include "ex.h"
+#include "lst.h"
#include "archive.h"
#include "inifcns.h"
#include "utils.h"
#include "debugmsg.h"
+#include "remember.h"
#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
#endif // ndef NO_NAMESPACE_GINAC
+//////////
+// helper class function_options
+//////////
+
+function_options::function_options()
+{
+ initialize();
+}
+
+function_options::function_options(std::string const & n, std::string const & tn)
+{
+ initialize();
+ set_name(n,tn);
+}
+
+function_options::~function_options()
+{
+ // nothing to clean up at the moment
+}
+
+void function_options::initialize(void)
+{
+ set_name("unnamed_function","\\\\operatorname{unnamed}");
+ nparams=0;
+ eval_f=evalf_f=derivative_f=series_f=0;
+ evalf_params_first=true;
+ use_return_type=false;
+ use_remember=false;
+ functions_with_same_name=1;
+}
+
+function_options & function_options::set_name(std::string const & n,
+ std::string const & tn)
+{
+ name=n;
+ if (tn==std::string()) {
+ TeX_name="\\\\operatorname{"+name+"}";
+ } else {
+ TeX_name=tn;
+ }
+ return *this;
+}
+
+// the following lines have been generated for max. ${maxargs} parameters
+$eval_func_implementation
+$evalf_func_implementation
+$derivative_func_implementation
+$series_func_implementation
+// end of generated lines
+
+function_options & function_options::set_return_type(unsigned rt, unsigned rtt)
+{
+ use_return_type=true;
+ return_type=rt;
+ return_type_tinfo=rtt;
+ return *this;
+}
+
+function_options & function_options::do_not_evalf_params(void)
+{
+ 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_options & function_options::overloaded(unsigned o)
+{
+ functions_with_same_name=o;
+ return *this;
+}
+
+void function_options::test_and_set_nparams(unsigned n)
+{
+ 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
+ // caught anyhow
+ std::cerr << "WARNING: number of parameters ("
+ << n << ") differs from number set before ("
+ << nparams << ")" << std::endl;
+ }
+}
+
GINAC_IMPLEMENT_REGISTERED_CLASS(function, exprseq)
//////////
debugmsg("function constructor from archive_node", LOGLEVEL_CONSTRUCT);
// Find serial number by function name
- string s;
+ std::string s;
if (n.find_string("name", s)) {
unsigned int ser = 0;
- vector<registered_function_info>::const_iterator i = registered_functions().begin(), iend = registered_functions().end();
+ std::vector<function_options>::const_iterator i = registered_functions().begin(), iend = registered_functions().end();
while (i != iend) {
if (s == i->name) {
serial = ser;
return new function(*this);
}
-void function::printraw(ostream & os) const
+void function::printraw(std::ostream & os) const
{
debugmsg("function printraw",LOGLEVEL_PRINT);
os << ")";
}
-void function::print(ostream & os, unsigned upper_precedence) const
+void function::print(std::ostream & os, unsigned upper_precedence) const
{
debugmsg("function print",LOGLEVEL_PRINT);
printseq(os,'(',',',')',exprseq::precedence,function::precedence);
}
-void function::printtree(ostream & os, unsigned indent) const
+void function::printtree(std::ostream & os, unsigned indent) const
{
debugmsg("function printtree",LOGLEVEL_PRINT);
GINAC_ASSERT(serial<registered_functions().size());
- os << string(indent,' ') << "function "
+ os << std::string(indent,' ') << "function "
<< registered_functions()[serial].name
- << ", hash=" << hashvalue << " (0x" << hex << hashvalue << dec << ")"
+ << ", hash=" << hashvalue
+ << " (0x" << std::hex << hashvalue << std::dec << ")"
<< ", flags=" << flags
- << ", nops=" << nops() << endl;
+ << ", nops=" << nops() << std::endl;
for (unsigned i=0; i<nops(); ++i) {
seq[i].printtree(os,indent+delta_indent);
}
- os << string(indent+delta_indent,' ') << "=====" << endl;
+ os << std::string(indent+delta_indent,' ') << "=====" << std::endl;
}
-void function::printcsrc(ostream & os, unsigned type, unsigned upper_precedence) const
+void function::printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence) const
{
debugmsg("function print csrc",LOGLEVEL_PRINT);
GINAC_ASSERT(serial<registered_functions().size());
// Print function name in lowercase
- string lname;
+ std::string lname;
lname=registered_functions()[serial].name;
for (unsigned i=0; i<lname.size(); i++)
lname[i] = tolower(lname[i]);
{
GINAC_ASSERT(serial<registered_functions().size());
- exvector eseq=evalchildren(level);
+ if (level>1) {
+ // first evaluate children, then we will end up here again
+ return function(serial,evalchildren(level));
+ }
- if (registered_functions()[serial].e==0) {
- return function(serial,eseq).hold();
+ if (registered_functions()[serial].eval_f==0) {
+ return this->hold();
}
+
+ bool use_remember=registered_functions()[serial].use_remember;
+ ex eval_result;
+ if (use_remember && lookup_remember_table(eval_result)) {
+ return eval_result;
+ }
+
switch (registered_functions()[serial].nparams) {
// the following lines have been generated for max. ${maxargs} parameters
${eval_switch_statement}
// end of generated lines
+ default:
+ throw(std::logic_error("function::eval(): invalid nparams"));
+ }
+ if (use_remember) {
+ store_remember_table(eval_result);
}
- throw(std::logic_error("function::eval(): invalid nparams"));
+ return eval_result;
}
ex function::evalf(int level) const
exvector eseq=evalfchildren(level);
- if (registered_functions()[serial].ef==0) {
+ if (registered_functions()[serial].evalf_f==0) {
return function(serial,eseq).hold();
}
switch (registered_functions()[serial].nparams) {
/** Implementation of ex::series for functions.
* \@see ex::series */
-ex function::series(const symbol & s, const ex & point, int order) const
+ex function::series(const relational & r, int order, unsigned options = 0) const
{
GINAC_ASSERT(serial<registered_functions().size());
- if (registered_functions()[serial].s==0) {
- return basic::series(s, point, order);
+ if (registered_functions()[serial].series_f==0) {
+ return basic::series(r, order);
}
ex res;
switch (registered_functions()[serial].nparams) {
{
ex result;
- if (serial==function_index_Order) {
+ if (serial == function_index_Order) {
// Order Term function only differentiates the argument
return Order(seq[0].diff(s));
+ } else if (serial == function_index_Derivative) {
+ // Inert derivative performs chain rule on the first argument only, and
+ // adds differentiation parameter to list (second argument)
+ GINAC_ASSERT(is_ex_exactly_of_type(seq[0], function));
+ GINAC_ASSERT(is_ex_exactly_of_type(seq[1], function));
+ ex fcn = seq[0];
+ ex arg_diff;
+ for (unsigned i=0; i!=fcn.nops(); i++) {
+ arg_diff = fcn.op(i).diff(s);
+ if (!arg_diff.is_zero()) {
+ lst new_lst = ex_to_lst(seq[1]);
+ new_lst.append(i);
+ result += arg_diff * Derivative(fcn, new_lst);
+ }
+ }
} else {
// Chain rule
ex arg_diff;
{
GINAC_ASSERT(serial<registered_functions().size());
- if (registered_functions()[serial].d==0) {
- throw(std::logic_error(string("function::pderivative(") + registered_functions()[serial].name + "): no diff function defined"));
+ if (registered_functions()[serial].derivative_f==0) {
+ return Derivative(*this, lst(diff_param));
}
switch (registered_functions()[serial].nparams) {
// the following lines have been generated for max. ${maxargs} parameters
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(void)
{
- static vector<registered_function_info> * rf=new vector<registered_function_info>;
+ static std::vector<function_options> * rf = new std::vector<function_options>;
return *rf;
}
+bool function::lookup_remember_table(ex & result) const
+{
+ return remember_table::remember_tables()[serial].lookup_entry(*this,result);
+}
+
+void function::store_remember_table(ex const & result) const
+{
+ remember_table::remember_tables()[serial].add_entry(*this,result);
+}
+
// public
-// the following lines have been generated for max. ${maxargs} parameters
-$register_new_implementation
-// end of generated lines
+unsigned function::register_new(function_options const & opt)
+{
+ unsigned same_name=0;
+ for (unsigned 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;
+}
+
+/** 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"));
+}
//////////
// static member variables
git://www.ginac.de / ginac.git / blobdiff