approach 5

Author: grisumbras

include/boost/json/detail/digest.hpp

@@ -32,19 +32,18 @@ digest(
 #endif
     hash += salt;
 
-    constexpr std::size_t step = sizeof(std::size_t);
-    auto const m = n - (n % step);
+    auto const m = n - (n % 4);
     n -= m;
 
     char const* const end = s + m;
-    for(; s < end; s += step)
+    for(; s < end; s += 4)
     {
-        std::size_t batch;
-        std::memcpy(&batch, s, step);
+        std::uint32_t batch;
+        std::memcpy(&batch, s, 4);
         hash = (batch ^ hash) * prime;
     }
 
-    std::size_t batch = 0;
+    std::uint32_t batch = 0;
     std::memcpy(&batch, s, n);
     hash = (batch ^ hash) * prime;