some cleanups

[ginac.git] / ginac / color.cpp

diff --git a/ginac/color.cpp b/ginac/color.cpp
index 45521b7aa9ec13dd8683ff479fc82c37ad139879..195b93e71ab9c651f196ec58f81c0312b4c4b6f6 100644 (file)
--- a/ginac/color.cpp
+++ b/ginac/color.cpp
@@ -165,7 +165,7 @@ ex color::simplify_ncmul(const exvector & v) const
                it++;
        }
 
-       if (s.size() == 0)
+       if (s.empty())
                return color(su3one(), representation_label);
        else
                return simplified_ncmul(s);
@@ -220,7 +220,7 @@ ex su3d::eval_indexed(const basic & i) const
        GINAC_ASSERT(is_ex_of_type(i.op(0), su3d));
 
        // Convolutions are zero
-       if (static_cast<const indexed &>(i).get_dummy_indices().size() != 0)
+       if (!(static_cast<const indexed &>(i).get_dummy_indices().empty()))
                return _ex0();
 
        // Numeric evaluation