#include "debugmsg.h"
#include "utils.h"
-#ifndef NO_GINAC_NAMESPACE
+#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
-#endif // ndef NO_GINAC_NAMESPACE
+#endif // ndef NO_NAMESPACE_GINAC
GINAC_IMPLEMENT_REGISTERED_CLASS(mul, expairseq)
{
debugmsg("mul constructor from ex,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_mul;
- overall_coeff=_ex1();
+ overall_coeff = _ex1();
construct_from_2_ex(lh,rh);
GINAC_ASSERT(is_canonical());
}
{
debugmsg("mul constructor from exvector",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_mul;
- overall_coeff=_ex1();
+ overall_coeff = _ex1();
construct_from_exvector(v);
GINAC_ASSERT(is_canonical());
}
-/*
-mul::mul(const epvector & v, bool do_not_canonicalize)
-{
- debugmsg("mul constructor from epvector,bool",LOGLEVEL_CONSTRUCT);
- tinfo_key = TINFO_mul;
- if (do_not_canonicalize) {
- seq=v;
-#ifdef EXPAIRSEQ_USE_HASHTAB
- combine_same_terms(); // to build hashtab
-#endif // def EXPAIRSEQ_USE_HASHTAB
- } else {
- construct_from_epvector(v);
- }
- GINAC_ASSERT(is_canonical());
-}
-*/
-
mul::mul(const epvector & v)
{
debugmsg("mul constructor from epvector",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_mul;
- overall_coeff=_ex1();
+ overall_coeff = _ex1();
construct_from_epvector(v);
GINAC_ASSERT(is_canonical());
}
{
debugmsg("mul constructor from epvector,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_mul;
- overall_coeff=oc;
+ overall_coeff = oc;
construct_from_epvector(v);
GINAC_ASSERT(is_canonical());
}
debugmsg("mul constructor from epvector *,ex",LOGLEVEL_CONSTRUCT);
tinfo_key = TINFO_mul;
GINAC_ASSERT(vp!=0);
- overall_coeff=oc;
+ overall_coeff = oc;
construct_from_epvector(*vp);
delete vp;
GINAC_ASSERT(is_canonical());
factors.push_back(lh);
factors.push_back(mh);
factors.push_back(rh);
- overall_coeff=_ex1();
+ overall_coeff = _ex1();
construct_from_exvector(factors);
GINAC_ASSERT(is_canonical());
}
return this->hold();
}
+ex mul::evalf(int level) const
+{
+ if (level==1)
+ return mul(seq,overall_coeff);
+
+ if (level==-max_recursion_level)
+ throw(std::runtime_error("max recursion level reached"));
+
+ epvector s;
+ s.reserve(seq.size());
+
+ --level;
+ for (epvector::const_iterator it=seq.begin(); it!=seq.end(); ++it) {
+ s.push_back(combine_ex_with_coeff_to_pair((*it).rest.evalf(level),
+ (*it).coeff));
+ }
+ return mul(s,overall_coeff.evalf(level));
+}
+
exvector mul::get_indices(void) const
{
// return union of indices of factors
// protected
+/** Implementation of ex::diff() for a product. It applies the product rule.
+ * @see ex::diff */
+ex mul::derivative(const symbol & s) const
+{
+ exvector new_seq;
+ new_seq.reserve(seq.size());
+
+ // D(a*b*c)=D(a)*b*c+a*D(b)*c+a*b*D(c)
+ for (unsigned i=0; i!=seq.size(); i++) {
+ epvector sub_seq=seq;
+ sub_seq[i] = split_ex_to_pair(sub_seq[i].coeff*
+ power(sub_seq[i].rest,sub_seq[i].coeff-1)*
+ sub_seq[i].rest.diff(s));
+ new_seq.push_back((new mul(sub_seq,overall_coeff))->setflag(status_flags::dynallocated));
+ }
+ return (new add(new_seq))->setflag(status_flags::dynallocated);
+}
+
int mul::compare_same_type(const basic & other) const
{
return inherited::compare_same_type(other);
const mul some_mul;
const type_info & typeid_mul=typeid(some_mul);
-#ifndef NO_GINAC_NAMESPACE
+#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
-#endif // ndef NO_GINAC_NAMESPACE
+#endif // ndef NO_NAMESPACE_GINAC