Remove is_all_different

Author: AntoinePrv

include/xsimd/arch/common/xsimd_common_swizzle.hpp

@@ -144,21 +144,13 @@ namespace xsimd
             }
             template <typename T, T... Vs>
             XSIMD_INLINE constexpr bool is_identity() noexcept { return detail::identity_impl<0, T, Vs...>(); }
-            template <typename T, T... Vs>
-            XSIMD_INLINE constexpr bool is_all_different() noexcept
-            {
-                return detail::bitmask_impl<0, sizeof...(Vs), T, Vs...>() == ((1u << sizeof...(Vs)) - 1);
-            }
-
             template <typename T, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_lo() noexcept { return detail::dup_lo_impl<0, sizeof...(Vs), T, Vs...>(); }
             template <typename T, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_hi() noexcept { return detail::dup_hi_impl<0, sizeof...(Vs), T, Vs...>(); }
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_identity(batch_constant<T, A, Vs...>) noexcept { return is_identity<T, Vs...>(); }
             template <typename T, class A, T... Vs>
-            XSIMD_INLINE constexpr bool is_all_different(batch_constant<T, A, Vs...>) noexcept { return is_all_different<T, Vs...>(); }
-            template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_lo(batch_constant<T, A, Vs...>) noexcept { return is_dup_lo<T, Vs...>(); }
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_hi(batch_constant<T, A, Vs...>) noexcept { return is_dup_hi<T, Vs...>(); }

include/xsimd/arch/xsimd_common_fwd.hpp

@@ -60,8 +60,6 @@ namespace xsimd
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_identity(batch_constant<T, A, Vs...>) noexcept;
             template <typename T, class A, T... Vs>
-            XSIMD_INLINE constexpr bool is_all_different(batch_constant<T, A, Vs...>) noexcept;
-            template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_lo(batch_constant<T, A, Vs...>) noexcept;
             template <typename T, class A, T... Vs>
             XSIMD_INLINE constexpr bool is_dup_hi(batch_constant<T, A, Vs...>) noexcept;

test/test_batch_manip.cpp

@@ -26,8 +26,7 @@ namespace xsimd
             //  compile-time tests (identity, all-different, dup-lo, dup-hi)
             //  8-lane identity
             static_assert(is_identity<std::uint32_t, 0, 1, 2, 3, 4, 5, 6, 7>(), "identity failed");
-            // 8-lane reverse is all-different but not identity
-            static_assert(is_all_different<std::uint32_t, 7, 6, 5, 4, 3, 2, 1, 0>(), "all-diff failed");
+            // 8-lane reverse is not identity
             static_assert(!is_identity<std::uint32_t, 7, 6, 5, 4, 3, 2, 1, 0>(), "identity on reverse");
             // 8-lane dup-lo (repeat 0..3 twice)
             static_assert(is_dup_lo<std::uint32_t, 0, 1, 2, 3, 0, 1, 2, 3>(), "dup_lo failed");
@@ -38,8 +37,7 @@ namespace xsimd
             // ────────────────────────────────────────────────────────────────────────
             //  4-lane identity
             static_assert(is_identity<std::uint32_t, 0, 1, 2, 3>(), "4-lane identity failed");
-            // 4-lane reverse all-different but not identity
-            static_assert(is_all_different<std::uint32_t, 3, 2, 1, 0>(), "4-lane all-diff failed");
+            // 4-lane reverse is not identity
             static_assert(!is_identity<std::uint32_t, 3, 2, 1, 0>(), "4-lane identity on reverse");
             // 4-lane dup-lo (repeat 0..1 twice)
             static_assert(is_dup_lo<std::uint32_t, 0, 1, 0, 1>(), "4-lane dup_lo failed");