feat: Add batch::raw

Author: AntoinePrv

include/xsimd/types/xsimd_batch.hpp

@@ -193,6 +193,8 @@ namespace xsimd
 
         XSIMD_INLINE T first() const noexcept;
 
+        XSIMD_INLINE register_type raw() const noexcept;
+
         // comparison operators. Defined as friend to enable automatic
         // conversion of parameters from scalar to batch, at the cost of using a
         // proxy implementation from details::.
@@ -355,6 +357,8 @@ namespace xsimd
 
         XSIMD_INLINE bool first() const noexcept;
 
+        XSIMD_INLINE register_type raw() const noexcept;
+
         // mask operations
         XSIMD_INLINE uint64_t mask() const noexcept;
         XSIMD_INLINE static batch_bool from_mask(uint64_t mask) noexcept;
@@ -836,6 +840,15 @@ namespace xsimd
         return kernel::first(*this, A {});
     }
 
+    /**
+     * Cast to the underlying native intrinsic register type.
+     */
+    template <class T, class A>
+    XSIMD_INLINE auto batch<T, A>::raw() const noexcept -> register_type
+    {
+        return static_cast<register_type>(*this);
+    }
+
     /******************************
      * batch comparison operators *
      ******************************/
@@ -1167,6 +1180,15 @@ namespace xsimd
         return kernel::first(*this, A {});
     }
 
+    /**
+     * Cast to the underlying native intrinsic register type.
+     */
+    template <class T, class A>
+    XSIMD_INLINE auto batch_bool<T, A>::raw() const noexcept -> register_type
+    {
+        return static_cast<register_type>(*this);
+    }
+
     /***********************************
      * batch_bool comparison operators *
      ***********************************/