diff options
Diffstat (limited to 'chilbert/Operations.hpp')
| -rw-r--r-- | chilbert/Operations.hpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/chilbert/Operations.hpp b/chilbert/Operations.hpp index b2e4344..5781e6c 100644 --- a/chilbert/Operations.hpp +++ b/chilbert/Operations.hpp @@ -90,6 +90,24 @@ setBit(T& field, const BitsetIndex<T> index, const bool value) /// Return 1 + the index of the least significant 1-bit of `field`, or zero template <typename T> +int pop_count(const T& field); + +template <> +int +pop_count<unsigned long>(const unsigned long& field) +{ + return __builtin_popcountl(field); +} + +template <> +int +pop_count<unsigned long long>(const unsigned long long& field) +{ + return __builtin_popcountll(field); +} + +/// Return 1 + the index of the least significant 1-bit of `field`, or zero +template <typename T> int ffs(const T field); template <> |