diff options
| -rw-r--r-- | src/lib/math/numbertheory/reducer.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/lib/math/numbertheory/reducer.cpp b/src/lib/math/numbertheory/reducer.cpp index e9db7753b..9dbcfb9a3 100644 --- a/src/lib/math/numbertheory/reducer.cpp +++ b/src/lib/math/numbertheory/reducer.cpp @@ -62,10 +62,10 @@ BigInt Modular_Reducer::reduce(const BigInt& x) const t1.reduce_below(m_modulus, ws); - if(x.is_positive()) - return t1; - else - return (m_modulus - t1); + if(x.is_negative()) + t1.rev_sub(m_modulus.data(), m_modulus.size(), ws); + + return t1; } else { |