diff options
Diffstat (limited to 'lib/potts.h')
-rw-r--r-- | lib/potts.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/potts.h b/lib/potts.h index e6ea636..771c8dc 100644 --- a/lib/potts.h +++ b/lib/potts.h @@ -53,6 +53,16 @@ class potts_t { return result; } + + inline vector_t<q, int> operator-(const potts_t<q> &s) const { + vector_t<q, int> result; + result.fill(0); + + result[x]++; + result[s.x]--; + + return result; + } }; template <q_t q> |