686 			MPI z1, z2, z3;  in mpi_ec_get_affine()  local
697 				z3 = mpi_new(0);  in mpi_ec_get_affine()
698 				ec_mulm(z3, z2, z1, ctx);      /* z3 = z^(-3) mod p */  in mpi_ec_get_affine()
699 				ec_mulm(y, point->y, z3, ctx);  in mpi_ec_get_affine()
700 				mpi_free(z3);  in mpi_ec_get_affine()
758 #define z3 (result->z)  in dup_point_weierstrass()  macro
770 		mpi_set_ui(z3, 0);  in dup_point_weierstrass()
793 		ec_mulm(z3, point->y, point->z, ctx);  in dup_point_weierstrass()
794 		ec_mul2(z3, z3, ctx);  in dup_point_weierstrass()
821 #undef z3  in dup_point_weierstrass()
943 #define z3 (result->z)  in add_points_weierstrass()  macro
963 		mpi_set(z3, p2->z);  in add_points_weierstrass()
968 		mpi_set(z3, p1->z);  in add_points_weierstrass()
1006 				mpi_set_ui(z3, 0);  in add_points_weierstrass()
1014 			ec_mulm(z3, z1, z2, ctx);  in add_points_weierstrass()
1015 			ec_mulm(z3, z3, l3, ctx);  in add_points_weierstrass()
1041 #undef z3  in add_points_weierstrass()
1337 		MPI z2, z3;  in mpi_ec_mul_point()  local
1340 		z3 = mpi_alloc_like(ctx->p);  in mpi_ec_mul_point()
1342 		ec_mulm(z3, point->z, z2, ctx);  in mpi_ec_mul_point()
1345 		ec_invm(z3, z3, ctx);  in mpi_ec_mul_point()
1346 		ec_mulm(y1, yy, z3, ctx);  in mpi_ec_mul_point()
1348 		mpi_free(z3);  in mpi_ec_mul_point()