Needed to call get_all_dummy_indices_safely more often.

[ginac.git] / ginac / tensor.cpp

diff --git a/ginac/tensor.cpp b/ginac/tensor.cpp
index 7b1e32338c2b6ead77cb260f6a1e6d54d76c2628..c215237d85f9d1225913b7fff4f87e59e0bc8134 100644 (file)
--- a/ginac/tensor.cpp
+++ b/ginac/tensor.cpp
@@ -141,6 +141,22 @@ DEFAULT_COMPARE(tensdelta)
 DEFAULT_COMPARE(tensmetric)
 DEFAULT_COMPARE(spinmetric)
 
+bool tensdelta::info(unsigned inf) const
+{
+       if(inf == info_flags::real)
+               return true;
+
+       return false;
+}
+
+bool tensmetric::info(unsigned inf) const
+{
+       if(inf == info_flags::real)
+               return true;
+
+       return false;
+}
+
 int minkmetric::compare_same_type(const basic & other) const
 {
        GINAC_ASSERT(is_a<minkmetric>(other));
@@ -152,6 +168,14 @@ int minkmetric::compare_same_type(const basic & other) const
                return inherited::compare_same_type(other);
 }
 
+bool minkmetric::info(unsigned inf) const
+{
+       if(inf == info_flags::real)
+               return true;
+
+       return false;
+}
+
 int tensepsilon::compare_same_type(const basic & other) const
 {
        GINAC_ASSERT(is_a<tensepsilon>(other));
@@ -165,6 +189,22 @@ int tensepsilon::compare_same_type(const basic & other) const
                return inherited::compare_same_type(other);
 }
 
+bool tensepsilon::info(unsigned inf) const
+{
+       if(inf == info_flags::real)
+               return true;
+
+       return false;
+}
+
+bool spinmetric::info(unsigned inf) const
+{
+       if(inf == info_flags::real)
+               return true;
+
+       return false;
+}
+
 DEFAULT_PRINT_LATEX(tensdelta, "delta", "\\delta")
 DEFAULT_PRINT(tensmetric, "g")
 DEFAULT_PRINT_LATEX(minkmetric, "eta", "\\eta")
@@ -588,6 +628,9 @@ ex epsilon_tensor(const ex & i1, const ex & i2)
        if (!ex_to<idx>(i1).get_dim().is_equal(_ex2))
                throw(std::runtime_error("index dimension of epsilon tensor must match number of indices"));
 
+       if(is_a<wildcard>(i1.op(0))||is_a<wildcard>(i2.op(0)))
+               return indexed(epsilon, antisymmetric2(), i1, i2).hold();
+
        return indexed(epsilon, antisymmetric2(), i1, i2);
 }
 
@@ -604,6 +647,9 @@ ex epsilon_tensor(const ex & i1, const ex & i2, const ex & i3)
        if (!ex_to<idx>(i1).get_dim().is_equal(_ex3))
                throw(std::runtime_error("index dimension of epsilon tensor must match number of indices"));
 
+       if(is_a<wildcard>(i1.op(0))||is_a<wildcard>(i2.op(0))||is_a<wildcard>(i3.op(0)))
+               return indexed(epsilon, antisymmetric3(), i1, i2, i3).hold();
+
        return indexed(epsilon, antisymmetric3(), i1, i2, i3);
 }
 
@@ -621,6 +667,9 @@ ex lorentz_eps(const ex & i1, const ex & i2, const ex & i3, const ex & i4, bool
        if (!ex_to<idx>(i1).get_dim().is_equal(_ex4))
                throw(std::runtime_error("index dimension of epsilon tensor must match number of indices"));
 
+       if(is_a<wildcard>(i1.op(0))||is_a<wildcard>(i2.op(0))||is_a<wildcard>(i3.op(0))||is_a<wildcard>(i4.op(0)))
+               return indexed(pos_sig ? epsilon_pos : epsilon_neg, antisymmetric4(), i1, i2, i3, i4).hold();
+
        return indexed(pos_sig ? epsilon_pos : epsilon_neg, antisymmetric4(), i1, i2, i3, i4);
 }