616   BIGNUM *n0, *n1, *n2, *n3, *n4, *n5, *n6;  in ec_GFp_simple_add()  local
641   n0 = BN_CTX_get(ctx);  in ec_GFp_simple_add()
665     if (!field_sqr(group, n0, &b->Z, ctx) ||  in ec_GFp_simple_add()
666         !field_mul(group, n1, &a->X, n0, ctx)) {  in ec_GFp_simple_add()
671     if (!field_mul(group, n0, n0, &b->Z, ctx) ||  in ec_GFp_simple_add()
672         !field_mul(group, n2, &a->Y, n0, ctx)) {  in ec_GFp_simple_add()
686     if (!field_sqr(group, n0, &a->Z, ctx) ||  in ec_GFp_simple_add()
687         !field_mul(group, n3, &b->X, n0, ctx)) {  in ec_GFp_simple_add()
692     if (!field_mul(group, n0, n0, &a->Z, ctx) ||  in ec_GFp_simple_add()
693         !field_mul(group, n4, &b->Y, n0, ctx)) {  in ec_GFp_simple_add()
738       if (!BN_copy(n0, &b->Z)) {  in ec_GFp_simple_add()
742       if (!BN_copy(n0, &a->Z)) {  in ec_GFp_simple_add()
745     } else if (!field_mul(group, n0, &a->Z, &b->Z, ctx)) {  in ec_GFp_simple_add()
748     if (!field_mul(group, &r->Z, n0, n5, ctx)) {  in ec_GFp_simple_add()
756   if (!field_sqr(group, n0, n6, ctx) ||  in ec_GFp_simple_add()
759       !BN_mod_sub_quick(&r->X, n0, n3, p)) {  in ec_GFp_simple_add()
765   if (!BN_mod_lshift1_quick(n0, &r->X, p) ||  in ec_GFp_simple_add()
766       !BN_mod_sub_quick(n0, n3, n0, p)) {  in ec_GFp_simple_add()
772   if (!field_mul(group, n0, n0, n6, ctx) ||  in ec_GFp_simple_add()
777       !BN_mod_sub_quick(n0, n0, n1, p)) {  in ec_GFp_simple_add()
780   if (BN_is_odd(n0) && !BN_add(n0, n0, p)) {  in ec_GFp_simple_add()
784   if (!BN_rshift1(&r->Y, n0)) {  in ec_GFp_simple_add()
807   BIGNUM *n0, *n1, *n2, *n3;  in ec_GFp_simple_dbl()  local
828   n0 = BN_CTX_get(ctx);  in ec_GFp_simple_dbl()
843     if (!field_sqr(group, n0, &a->X, ctx) ||  in ec_GFp_simple_dbl()
844         !BN_mod_lshift1_quick(n1, n0, p) ||  in ec_GFp_simple_dbl()
845         !BN_mod_add_quick(n0, n0, n1, p) ||  in ec_GFp_simple_dbl()
846         !BN_mod_add_quick(n1, n0, &group->a, p)) {  in ec_GFp_simple_dbl()
852         !BN_mod_add_quick(n0, &a->X, n1, p) ||  in ec_GFp_simple_dbl()
854         !field_mul(group, n1, n0, n2, ctx) ||  in ec_GFp_simple_dbl()
855         !BN_mod_lshift1_quick(n0, n1, p) ||  in ec_GFp_simple_dbl()
856         !BN_mod_add_quick(n1, n0, n1, p)) {  in ec_GFp_simple_dbl()
862     if (!field_sqr(group, n0, &a->X, ctx) ||  in ec_GFp_simple_dbl()
863         !BN_mod_lshift1_quick(n1, n0, p) ||  in ec_GFp_simple_dbl()
864         !BN_mod_add_quick(n0, n0, n1, p) ||  in ec_GFp_simple_dbl()
868         !BN_mod_add_quick(n1, n1, n0, p)) {  in ec_GFp_simple_dbl()
876     if (!BN_copy(n0, &a->Y)) {  in ec_GFp_simple_dbl()
879   } else if (!field_mul(group, n0, &a->Y, &a->Z, ctx)) {  in ec_GFp_simple_dbl()
882   if (!BN_mod_lshift1_quick(&r->Z, n0, p)) {  in ec_GFp_simple_dbl()
897   if (!BN_mod_lshift1_quick(n0, n2, p) ||  in ec_GFp_simple_dbl()
899       !BN_mod_sub_quick(&r->X, &r->X, n0, p)) {  in ec_GFp_simple_dbl()
905   if (!field_sqr(group, n0, n3, ctx) ||  in ec_GFp_simple_dbl()
906       !BN_mod_lshift_quick(n3, n0, 3, p)) {  in ec_GFp_simple_dbl()
912   if (!BN_mod_sub_quick(n0, n2, &r->X, p) ||  in ec_GFp_simple_dbl()
913       !field_mul(group, n0, n1, n0, ctx) ||  in ec_GFp_simple_dbl()
914       !BN_mod_sub_quick(&r->Y, n0, n3, p)) {  in ec_GFp_simple_dbl()