BN_mod_sub_quick
int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m);
LCRYPTO_ALIAS(BN_mod_sub_quick);
if (!BN_mod_sub_quick(y, y, w, p))
if (!BN_mod_sub_quick(rh, rh, tmp, group->p))
if (!BN_mod_sub_quick(n5, n1, n3, group->p))
if (!BN_mod_sub_quick(n6, n2, n4, group->p))
if (!BN_mod_sub_quick(r->X, n0, n3, group->p))
if (!BN_mod_sub_quick(n0, n3, n0, group->p))
if (!BN_mod_sub_quick(n0, n0, n1, group->p))
if (!BN_mod_sub_quick(n2, a->X, n1, group->p))
if (!BN_mod_sub_quick(r->X, r->X, n0, group->p))
if (!BN_mod_sub_quick(n0, n2, r->X, group->p))
if (!BN_mod_sub_quick(r->Y, n0, n3, group->p))
LCRYPTO_USED(BN_mod_sub_quick);