WIP

Author: serge-sans-paille

include/xsimd/arch/xsimd_altivec.hpp

@@ -16,6 +16,10 @@
 #include <limits>
 #include <type_traits>
 
+#ifdef __linux__
+#include <endian.h>
+#endif
+
 #include "../types/xsimd_altivec_register.hpp"
 
 namespace xsimd
@@ -918,14 +922,22 @@ namespace xsimd
         template <class A, class T, class = typename std::enable_if<std::is_scalar<T>::value, void>::type>
         XSIMD_INLINE void store_aligned(T* mem, batch<T, A> const& self, requires_arch<altivec>) noexcept
         {
+#if BYTE_ORDER == LITTLE_ENDIAN
             return vec_st(self.data, 0, reinterpret_cast<typename batch<T, A>::register_type*>(mem));
+#else
+            return vec_st_be(self.data, 0, reinterpret_cast<typename batch<T, A>::register_type*>(mem));
+#endif
         }
 
         // store_unaligned
         template <class A, class T, class = typename std::enable_if<std::is_scalar<T>::value, void>::type>
         XSIMD_INLINE void store_unaligned(T* mem, batch<T, A> const& self, requires_arch<altivec>) noexcept
         {
+#if BYTE_ORDER == LITTLE_ENDIAN
             return vec_xst(self.data, 0, reinterpret_cast<typename batch<T, A>::register_type*>(mem));
+#else
+            return vec_xst_be(self.data, 0, reinterpret_cast<typename batch<T, A>::register_type*>(mem));
+#endif
         }
 
         // sub