diff options
Diffstat (limited to 'boost/multiprecision/cpp_int/add.hpp')
| -rw-r--r-- | boost/multiprecision/cpp_int/add.hpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/boost/multiprecision/cpp_int/add.hpp b/boost/multiprecision/cpp_int/add.hpp index 2fca9b9597..3b769cd8b6 100644 --- a/boost/multiprecision/cpp_int/add.hpp +++ b/boost/multiprecision/cpp_int/add.hpp @@ -417,8 +417,12 @@ BOOST_MP_FORCEINLINE typename enable_if_c<!is_trivial_cpp_int<cpp_int_backend<Mi static const limb_type one = 1; if(!result.sign() && (result.limbs()[0] < cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>::max_limb_value)) ++result.limbs()[0]; - else if(result.sign() && result.limbs()[0]) + else if (result.sign() && result.limbs()[0]) + { --result.limbs()[0]; + if (!result.limbs()[0]) + result.sign(false); + } else eval_add(result, one); } @@ -429,7 +433,7 @@ BOOST_MP_FORCEINLINE typename enable_if_c<!is_trivial_cpp_int<cpp_int_backend<Mi static const limb_type one = 1; if(!result.sign() && result.limbs()[0]) --result.limbs()[0]; - else if(result.sign() && (result.limbs()[0] < cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>::max_limb_value)) + else if (result.sign() && (result.limbs()[0] < cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>::max_limb_value)) ++result.limbs()[0]; else eval_subtract(result, one); |