GMP_TWOLIMB_BITS  102 maint/gnulib/lib/fma.c verify (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);
GMP_TWOLIMB_BITS  415 maint/gnulib/lib/vasnprintf.c verify (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);