Simplify fnv1a_xx(uint64_t). Compilers are smart enough to optimize t…

…he final four updates when the seed is known to be a 32 bit value.
boostorg · Oct 21, 2024 · 8ea059a · 8ea059a
1 parent db1c83b
commit 8ea059a
Showing 1 changed file with 3 additions and 12 deletions.
diff --git a/include/boost/hash2/fnv1a.hpp b/include/boost/hash2/fnv1a.hpp
@@ -55,18 +55,9 @@ template<class T> class fnv1a
     {
         if( seed )
         {
-            if( seed >> 32 )
-            {
-                unsigned char tmp[ 8 ];
-                detail::write64le( tmp, seed );
-                update( tmp, 8 );
-            }
-            else
-            {
-                unsigned char tmp[ 4 ];
-                detail::write32le( tmp, static_cast<std::uint32_t>( seed ) );
-                update( tmp, 4 );
-            }
+            unsigned char tmp[ 8 ];
+            detail::write64le( tmp, seed );
+            update( tmp, 8 );
         }
     }