Lines Matching refs:z1
84 /* Compute the x-coordinate x1/z1 for the point (x1/z1)+(x2/x2) in
89 gf2m_Madd(const mp_int *x, mp_int *x1, mp_int *z1, mp_int *x2, mp_int *z2,
102 MP_CHECKOK(group->meth->field_mul(z1, x2, z1, group->meth));
103 MP_CHECKOK(group->meth->field_mul(x1, z1, &t2, group->meth));
104 MP_CHECKOK(group->meth->field_add(z1, x1, z1, group->meth));
105 MP_CHECKOK(group->meth->field_sqr(z1, z1, group->meth));
106 MP_CHECKOK(group->meth->field_mul(z1, &t1, x1, group->meth));
115 /* Compute the x, y affine coordinates from the point (x1, z1) (x2, z2)
121 gf2m_Mxy(const mp_int *x, const mp_int *y, mp_int *x1, mp_int *z1,
135 if (mp_cmp_z(z1) == 0) {
154 MP_CHECKOK(group->meth->field_mul(z1, z2, &t3, group->meth));
156 MP_CHECKOK(group->meth->field_mul(z1, x, z1, group->meth));
157 MP_CHECKOK(group->meth->field_add(z1, x1, z1, group->meth));
162 MP_CHECKOK(group->meth->field_mul(z2, z1, z2, group->meth));
199 mp_int x1, x2, z1, z2;
205 MP_DIGITS(&z1) = 0;
209 MP_CHECKOK(mp_init(&z1, FLAG(n)));
219 MP_CHECKOK(mp_set_int(&z1, 1)); /* z1 = 1 */
254 MP_CHECKOK(gf2m_Madd(px, &x1, &z1, &x2, &z2, group, FLAG(n)));
257 MP_CHECKOK(gf2m_Madd(px, &x2, &z2, &x1, &z1, group, FLAG(n)));
258 MP_CHECKOK(gf2m_Mdouble(&x1, &z1, group, FLAG(n)));
267 i = gf2m_Mxy(px, py, &x1, &z1, &x2, &z2, group);
281 mp_clear(&z1);