+ #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+ // Align the msb of the remainder to a byte
+ template < std::size_t Bits, bool RightShift >
+ class remainder
+ {
+ public:
+ typedef typename uint_t<Bits>::fast value_type;
+
+ static unsigned char align_msb( value_type rem )
+ { return rem >> (Bits - CHAR_BIT); }
+ };
+
+ // Specialization for the case that the remainder has less
+ // bits than a byte: align the remainder msb to the byte msb
+ template < std::size_t Bits >
+ class remainder< Bits, false >
+ {
+ public:
+ typedef typename uint_t<Bits>::fast value_type;
+
+ static unsigned char align_msb( value_type rem )
+ { return rem << (CHAR_BIT - Bits); }
+ };
+ #endif