diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/o3tl/safeint.hxx | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/o3tl/safeint.hxx b/include/o3tl/safeint.hxx index 47baccf067f8..56175edb3bbe 100644 --- a/include/o3tl/safeint.hxx +++ b/include/o3tl/safeint.hxx @@ -56,6 +56,15 @@ typename std::enable_if<std::is_unsigned<T>::value, T>::type saturating_add( } } +template<typename T> inline +typename std::enable_if<std::is_signed<T>::value, T>::type saturating_toggle_sign( + T a) +{ + if (a == std::numeric_limits<T>::min()) + return std::numeric_limits<T>::max(); + return a * -1; +} + #if defined(_MSC_VER) template<typename T> inline bool checked_multiply(T a, T b, T& result) |