Lines Matching defs:lambda
82 mp_int lambda, temp, tempx, tempy;
84 MP_DIGITS(&lambda) = 0;
88 MP_CHECKOK(mp_init(&lambda, FLAG(px)));
106 /* if px != qx, then lambda = (py-qy) / (px-qx) */
111 field_div(&tempy, &tempx, &lambda, group->meth));
120 /* lambda = (3qx^2+a) / (2qy) */
136 field_div(&tempx, &tempy, &lambda, group->meth));
138 /* rx = lambda^2 - px - qx */
139 MP_CHECKOK(group->meth->field_sqr(&lambda, &tempx, group->meth));
142 /* ry = (x1-x2) * lambda - y1 */
145 field_mul(&tempy, &lambda, &tempy, group->meth));
151 mp_clear(&lambda);