BN_mod_lshift1_quick
if (!BN_mod_lshift1_quick(t, A, p))
if (!BN_mod_lshift1_quick(tmp2, x, &group->field))
if (!BN_mod_lshift1_quick(tmp, Z4, p))
if (!BN_mod_lshift1_quick(n0, &r->X, p))
if (!BN_mod_lshift1_quick(n1, n0, p))
if (!BN_mod_lshift1_quick(n0, n1, p))
if (!BN_mod_lshift1_quick(n1, n0, p))
if (!BN_mod_lshift1_quick(&r->Z, n0, p))
if (!BN_mod_lshift1_quick(n0, n2, p))
int BN_mod_lshift1_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *m);