Remove no_duplicates

Author: AntoinePrv

include/xsimd/arch/common/xsimd_common_swizzle.hpp

@@ -39,7 +39,7 @@ namespace xsimd
             };
 
             // ────────────────────────────────────────────────────────────────────────
-            //  1) identity_impl
+            // identity_impl
             template <std::size_t /*I*/, typename T>
             XSIMD_INLINE constexpr bool identity_impl() noexcept { return true; }
             template <std::size_t I, typename T, T V0, T... Vs>
@@ -50,18 +50,7 @@ namespace xsimd
             }
 
             // ────────────────────────────────────────────────────────────────────────
-            //  2) bitmask_impl
-            template <std::size_t /*I*/, std::size_t /*N*/, typename T>
-            XSIMD_INLINE constexpr std::uint32_t bitmask_impl() noexcept { return 0u; }
-            template <std::size_t I, std::size_t N, typename T, T V0, T... Vs>
-            XSIMD_INLINE constexpr std::uint32_t bitmask_impl() noexcept
-            {
-                return (1u << (static_cast<std::uint32_t>(V0) & (N - 1)))
-                    | bitmask_impl<I + 1, N, T, Vs...>();
-            }
-
-            // ────────────────────────────────────────────────────────────────────────
-            //  3) dup_lo_impl
+            // dup_lo_impl
             template <std::size_t I, std::size_t N, typename T,
                       T... Vs, typename std::enable_if<I == N / 2, int>::type = 0>
             XSIMD_INLINE constexpr bool dup_lo_impl() noexcept { return true; }
@@ -76,7 +65,7 @@ namespace xsimd
             }
 
             // ────────────────────────────────────────────────────────────────────────
-            //  4) dup_hi_impl
+            // dup_hi_impl
             template <std::size_t I, std::size_t N, typename T,
                       T... Vs, typename std::enable_if<I == N / 2, int>::type = 0>
             XSIMD_INLINE constexpr bool dup_hi_impl() noexcept { return true; }
@@ -123,19 +112,6 @@ namespace xsimd
             {
                 static constexpr bool value = false;
             };
-            template <std::size_t I, std::size_t N, typename T,
-                      T... Vs>
-            XSIMD_INLINE constexpr bool no_duplicates_impl() noexcept
-            {
-                // build the bitmask of (Vs & (N-1)) across all lanes
-                return detail::bitmask_impl<0, N, T, Vs...>() == ((1u << N) - 1u);
-            }
-            template <uint32_t... Vs>
-            XSIMD_INLINE constexpr bool no_duplicates_v() noexcept
-            {
-                // forward to your existing no_duplicates_impl
-                return no_duplicates_impl<0, sizeof...(Vs), uint32_t, Vs...>();
-            }
             template <uint32_t... Vs>
             XSIMD_INLINE constexpr bool is_cross_lane() noexcept
             {
@@ -156,8 +132,6 @@ namespace xsimd
             XSIMD_INLINE constexpr bool is_dup_hi(batch_constant<T, A, Vs...>) noexcept { return is_dup_hi<T, Vs...>(); }
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_cross_lane(batch_constant<T, A, Vs...>) noexcept { return detail::is_cross_lane<Vs...>(); }
-            template <typename T, class A, T... Vs>
-            XSIMD_INLINE constexpr bool no_duplicates(batch_constant<T, A, Vs...>) noexcept { return no_duplicates_impl<0, sizeof...(Vs), T, Vs...>(); }
 
         } // namespace detail
     } // namespace kernel

include/xsimd/arch/xsimd_common_fwd.hpp

@@ -65,8 +65,6 @@ namespace xsimd
             XSIMD_INLINE constexpr bool is_dup_hi(batch_constant<T, A, Vs...>) noexcept;
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_cross_lane(batch_constant<T, A, Vs...>) noexcept;
-            template <typename T, class A, T... Vs>
-            XSIMD_INLINE constexpr bool no_duplicates(batch_constant<T, A, Vs...>) noexcept;
 
         }
     }

test/test_batch_manip.cpp

@@ -51,12 +51,6 @@ namespace xsimd
             static_assert(is_cross_lane<0, 3, 3, 3>(), "one low + rest high → crossing");
             static_assert(!is_cross_lane<1, 0, 2, 3>(), "mixed low/high → no crossing");
             static_assert(!is_cross_lane<0, 1, 2, 3>(), "mixed low/high → no crossing");
-
-            static_assert(no_duplicates_v<0, 1, 2, 3>(), "N=4: [0,1,2,3] → distinct");
-            static_assert(!no_duplicates_v<0, 1, 2, 2>(), "N=4: [0,1,2,2] → dup");
-
-            static_assert(no_duplicates_v<0, 1, 2, 3, 4, 5, 6, 7>(), "N=8: [0..7] → distinct");
-            static_assert(!no_duplicates_v<0, 1, 2, 3, 4, 5, 6, 0>(), "N=8: last repeats 0");
         }
     }
 }