881                       const felem y2, const felem z2) {  in point_add()  argument
885   felem_square(z2z2, z2);  in point_add()
888   felem_sum(tmp, z1, z2);  in point_add()
893   felem_mul(z2z2z2, z2, z2z2);  in point_add()
928     const felem z1, const felem x2, const felem y2, const felem z2) {  in point_add_or_double_vartime()  argument
933   felem_square(z2z2, z2);  in point_add_or_double_vartime()
936   felem_sum(tmp, z1, z2);  in point_add_or_double_vartime()
941   felem_mul(z2z2z2, z2, z2z2);  in point_add_or_double_vartime()
1248   felem x1, y1, z1, x2, y2, z2, px, py;  in p256_points_mul_vartime()  local
1260   scalar_mult(x2, y2, z2, px, py, n2);  in p256_points_mul_vartime()
1270     memcpy(z1, z2, sizeof(z2));  in p256_points_mul_vartime()
1273     point_add_or_double_vartime(x1, y1, z1, x1, y1, z1, x2, y2, z2);  in p256_points_mul_vartime()