Function bf_set_nan

third-party/quickjs/src/quickjs/libbf.c:280–285

}

void bf_set_nan(bf_t *r)
{
    bf_resize(r, 0); /* cannot fail */
    r->expn = BF_EXP_NAN;
    r->sign = 0;
}

void bf_set_zero(bf_t *r, int is_neg)
{