nlz_int128        165 bignum.c       static int nlz(BDIGIT x) { return nlz_int128((uint128_t)x) - (SIZEOF_INT128_T-SIZEOF_BDIGIT) * CHAR_BIT; }
nlz_int128        412 internal.h          SIZEOF_INT128_T * CHAR_BIT - nlz_int128((uint128_t)(x)))