diff --git a/doc/modules/ROOT/pages/numeric.adoc b/doc/modules/ROOT/pages/numeric.adoc
index b7808510..091704c8 100644
--- a/doc/modules/ROOT/pages/numeric.adoc
+++ b/doc/modules/ROOT/pages/numeric.adoc
@@ -33,7 +33,7 @@ BOOST_INT128_HOST_DEVICE constexpr int128_t sub_sat(int128_t lhs, int128_t rhs)
 
 BOOST_INT128_HOST_DEVICE constexpr uint128_t mul_sat(uint128_t lhs, uint128_t rhs) noexcept;
 
-BOOST_INT128_HOST_DEVICE constexpr int128_t mul_sat(const int128_t& lhs, const int128_t& rhs) noexcept;
+BOOST_INT128_HOST_DEVICE constexpr int128_t mul_sat(int128_t lhs, int128_t rhs) noexcept;
 
 BOOST_INT128_HOST_DEVICE constexpr uint128_t div_sat(uint128_t lhs, uint128_t rhs) noexcept;
 
@@ -82,7 +82,7 @@ namespace int128 {
 
 BOOST_INT128_HOST_DEVICE constexpr uint128_t gcd(uint128_t a, uint128_t b) noexcept;
 
-BOOST_INT128_HOST_DEVICE constexpr int128_t gcd(const int128_t a, const int128_t b) noexcept;
+BOOST_INT128_HOST_DEVICE constexpr int128_t gcd(int128_t a, int128_t b) noexcept;
 
 } // namespace int128
 } // namespace boost
@@ -103,7 +103,7 @@ namespace int128 {
 
 BOOST_INT128_HOST_DEVICE constexpr uint128_t lcm(uint128_t a, uint128_t b) noexcept;
 
-BOOST_INT128_HOST_DEVICE constexpr int128_t lcm(const int128_t a, const int128_t b) noexcept;
+BOOST_INT128_HOST_DEVICE constexpr int128_t lcm(int128_t a, int128_t b) noexcept;
 
 } // namespace int128
 } // namespace boost
@@ -124,7 +124,7 @@ namespace int128 {
 
 BOOST_INT128_HOST_DEVICE constexpr uint128_t midpoint(uint128_t a, uint128_t b) noexcept;
 
-BOOST_INT128_HOST_DEVICE constexpr int128_t midpoint(const int128_t a, const int128_t b) noexcept;
+BOOST_INT128_HOST_DEVICE constexpr int128_t midpoint(int128_t a, int128_t b) noexcept;
 
 } // namespace int128
 } // namespace boost
diff --git a/include/boost/int128/numeric.hpp b/include/boost/int128/numeric.hpp
index c95c61aa..8b255b5f 100644
--- a/include/boost/int128/numeric.hpp
+++ b/include/boost/int128/numeric.hpp
@@ -150,7 +150,7 @@ BOOST_INT128_EXPORT BOOST_INT128_HOST_DEVICE constexpr uint128_t mul_sat(const u
     return x * y;
 }
 
-BOOST_INT128_EXPORT BOOST_INT128_HOST_DEVICE constexpr int128_t mul_sat(const int128_t& x, const int128_t& y) noexcept
+BOOST_INT128_EXPORT BOOST_INT128_HOST_DEVICE constexpr int128_t mul_sat(const int128_t x, const int128_t y) noexcept
 {
     const auto x_bits {bit_width(static_cast<uint128_t>(abs(x)))};
     const auto y_bits {bit_width(static_cast<uint128_t>(abs(y)))};