DEFAULT_UNARCHIVE(spinidx)
//////////
-// functions overriding virtual functions from bases classes
+// functions overriding virtual functions from base classes
//////////
void idx::print(const print_context & c, unsigned level) const
* must be such that dummy indices lie next to each other. */
int idx::compare_same_type(const basic & other) const
{
- GINAC_ASSERT(is_of_type(other, idx));
+ GINAC_ASSERT(is_a<idx>(other));
const idx &o = static_cast<const idx &>(other);
int cmpval = value.compare(o.value);
return dim.compare(o.dim);
}
+bool idx::match_same_type(const basic & other) const
+{
+ GINAC_ASSERT(is_a<idx>(other));
+ const idx &o = static_cast<const idx &>(other);
+
+ return dim.is_equal(o.dim);
+}
+
int varidx::compare_same_type(const basic & other) const
{
- GINAC_ASSERT(is_of_type(other, varidx));
+ GINAC_ASSERT(is_a<varidx>(other));
const varidx &o = static_cast<const varidx &>(other);
int cmpval = inherited::compare_same_type(other);
return 0;
}
+bool varidx::match_same_type(const basic & other) const
+{
+ GINAC_ASSERT(is_a<varidx>(other));
+ const varidx &o = static_cast<const varidx &>(other);
+
+ if (covariant != o.covariant)
+ return false;
+ return inherited::match_same_type(other);
+}
+
int spinidx::compare_same_type(const basic & other) const
{
- GINAC_ASSERT(is_of_type(other, spinidx));
+ GINAC_ASSERT(is_a<spinidx>(other));
const spinidx &o = static_cast<const spinidx &>(other);
// Check dottedness first so dummy indices will end up next to each other
return 0;
}
-bool idx::match(const ex & pattern, lst & repl_lst) const
+bool spinidx::match_same_type(const basic & other) const
{
- if (!is_ex_of_type(pattern, idx))
- return false;
- const idx &o = ex_to_idx(pattern);
- if (!dim.is_equal(o.dim))
- return false;
- return value.match(o.value, repl_lst);
-}
+ GINAC_ASSERT(is_a<spinidx>(other));
+ const spinidx &o = static_cast<const spinidx &>(other);
-bool varidx::match(const ex & pattern, lst & repl_lst) const
-{
- if (!is_ex_of_type(pattern, varidx))
- return false;
- const varidx &o = ex_to_varidx(pattern);
- if (covariant != o.covariant)
+ if (dotted != o.dotted)
return false;
- return inherited::match(pattern, repl_lst);
+ return inherited::match_same_type(other);
}
-bool spinidx::match(const ex & pattern, lst & repl_lst) const
+/** By default, basic::evalf would evaluate the index value but we don't want
+ * a.1 to become a.(1.0). */
+ex idx::evalf(int level) const
{
- if (!is_ex_of_type(pattern, spinidx))
- return false;
- const spinidx &o = ex_to_spinidx(pattern);
- if (dotted != o.dotted)
- return false;
- return inherited::match(pattern, repl_lst);
+ return *this;
}
ex idx::subs(const lst & ls, const lst & lr, bool no_pattern) const
// First look for index substitutions
for (unsigned i=0; i<ls.nops(); i++) {
- if (is_equal(*(ls.op(i)).bp)) {
+ if (is_equal(ex_to<basic>(ls.op(i)))) {
// Substitution index->index
if (is_ex_of_type(lr.op(i), idx))
return i_copy->setflag(status_flags::dynallocated);
}
+/** Implementation of ex::diff() for an index always returns 0.
+ *
+ * @see ex::diff */
+ex idx::derivative(const symbol & s) const
+{
+ return _ex0;
+}
+
//////////
// new virtual functions
//////////
if (!is_ex_of_type(e1, idx) || !is_ex_of_type(e2, idx))
return false;
- return is_dummy_pair(ex_to_idx(e1), ex_to_idx(e2));
-}
-
-// Shaker sort is sufficient for the expected small number of indices
-template <class It, class Cmp>
-inline void shaker_sort(It first, It last, Cmp comp)
-{
- if (first == last)
- return;
- --last;
- if (first == last)
- return;
- It flag = first;
- do {
- It i;
- for (i=last; i>first; --i) {
- if (comp(*i, i[-1])) {
- iter_swap(i-1, i);
- flag = i - 1;
- }
- }
- ++flag;
- first = flag;
- for (i=first; i<last; ++i) {
- if (comp(i[1], *i)) {
- iter_swap(i, i+1);
- flag = i + 1;
- }
- }
- last = flag - 1;
- } while (first <= last);
+ return is_dummy_pair(ex_to<idx>(e1), ex_to<idx>(e2));
}
void find_free_and_dummy(exvector::const_iterator it, exvector::const_iterator itend, exvector & out_free, exvector & out_dummy)
// Only one index? Then it is a free one if it's not numeric
if (itend - it == 1) {
- if (ex_to_idx(*it).is_symbolic())
+ if (ex_to<idx>(*it).is_symbolic())
out_free.push_back(*it);
return;
}
// Sort index vector. This will cause dummy indices come to lie next
// to each other (because the sort order is defined to guarantee this).
exvector v(it, itend);
- shaker_sort(v.begin(), v.end(), ex_is_less());
+ shaker_sort(v.begin(), v.end(), ex_is_less(), ex_swap());
// Find dummy pairs and free indices
it = v.begin(); itend = v.end();
if (it == itend)
return;
} else {
- if (!it->is_equal(*last) && ex_to_idx(*last).is_symbolic())
+ if (!it->is_equal(*last) && ex_to<idx>(*last).is_symbolic())
out_free.push_back(*last);
}
last = it++;
}
- if (ex_to_idx(*last).is_symbolic())
+ if (ex_to<idx>(*last).is_symbolic())
out_free.push_back(*last);
}
git://www.ginac.de / ginac.git / blobdiff