* with arch_arm32.
*/
# ifndef C448_WORD_BITS
-# if defined(__SIZEOF_INT128__) && (__SIZEOF_INT128__ == 16)
+# if (defined(__SIZEOF_INT128__) && (__SIZEOF_INT128__ == 16)) \
+ && !defined(__sparc__)
# define C448_WORD_BITS 64 /* The number of bits in a word */
# else
# define C448_WORD_BITS 32 /* The number of bits in a word */