Lines Matching refs:z2
89 gf2m_Madd(const mp_int *x, mp_int *x1, mp_int *z1, mp_int *x2, mp_int *z2,
101 MP_CHECKOK(group->meth->field_mul(x1, z2, x1, group->meth));
115 /* Compute the x, y affine coordinates from the point (x1, z1) (x2, z2)
122 mp_int *x2, mp_int *z2, const ECGroup *group)
137 mp_zero(z2);
142 if (mp_cmp_z(z2) == 0) {
144 MP_CHECKOK(group->meth->field_add(x, y, z2, group->meth));
154 MP_CHECKOK(group->meth->field_mul(z1, z2, &t3, group->meth));
158 MP_CHECKOK(group->meth->field_mul(z2, x, z2, group->meth));
159 MP_CHECKOK(group->meth->field_mul(z2, x1, x1, group->meth));
160 MP_CHECKOK(group->meth->field_add(z2, x2, z2, group->meth));
162 MP_CHECKOK(group->meth->field_mul(z2, z1, z2, group->meth));
166 MP_CHECKOK(group->meth->field_add(&t4, z2, &t4, group->meth));
172 MP_CHECKOK(group->meth->field_add(x2, x, z2, group->meth));
174 MP_CHECKOK(group->meth->field_mul(z2, &t4, z2, group->meth));
175 MP_CHECKOK(group->meth->field_add(z2, y, z2, group->meth));
199 mp_int x1, x2, z1, z2;
206 MP_DIGITS(&z2) = 0;
210 MP_CHECKOK(mp_init(&z2, FLAG(n)));
220 MP_CHECKOK(group->meth->field_sqr(&x1, &z2, group->meth)); /* z2 =
223 MP_CHECKOK(group->meth->field_sqr(&z2, &x2, group->meth));
254 MP_CHECKOK(gf2m_Madd(px, &x1, &z1, &x2, &z2, group, FLAG(n)));
255 MP_CHECKOK(gf2m_Mdouble(&x2, &z2, group, FLAG(n)));
257 MP_CHECKOK(gf2m_Madd(px, &x2, &z2, &x1, &z1, group, FLAG(n)));
267 i = gf2m_Mxy(px, py, &x1, &z1, &x2, &z2, group);
275 MP_CHECKOK(mp_copy(&z2, ry));
282 mp_clear(&z2);