C448_WORD_BITS
#define WBITS C448_WORD_BITS /* NB this may be different from ARCH_WORD_BITS */
#ifndef C448_WORD_BITS
#if C448_WORD_BITS == 64
#elif C448_WORD_BITS == 32
#define C448_SCALAR_LIMBS ((446 - 1) / C448_WORD_BITS + 1)
chain >>= C448_WORD_BITS;
#define WBITS C448_WORD_BITS /* NB this may be different from ARCH_WORD_BITS */
#if C448_WORD_BITS == 64
#elif C448_WORD_BITS == 32