65    gsModEngine* pGFE = GFP_PMA(pGF);  in gfec_affine_point_add()  local
66    int elemLen = GFP_FELEN(pGFE);  in gfec_affine_point_add()
68    mod_sub  sub = GFP_METHOD(pGFE)->sub;   /* gf sub  */  in gfec_affine_point_add()
69    mod_mul2 mul2= GFP_METHOD(pGFE)->mul2;  /* gf mul2 */  in gfec_affine_point_add()
70    mod_mul  mul = GFP_METHOD(pGFE)->mul;   /* gf mul  */  in gfec_affine_point_add()
71    mod_sqr  sqr = GFP_METHOD(pGFE)->sqr;   /* gf sqr  */  in gfec_affine_point_add()
73    BNU_CHUNK_T* mont1 = GFP_MNT_R(pGFE);  in gfec_affine_point_add()
97    sqr(R, pz, pGFE);             // R = Z1^2  in gfec_affine_point_add()
98    mul(S2, ay, pz, pGFE);        // S2 = Y2*Z1  in gfec_affine_point_add()
99    mul(U2, ax, R, pGFE);         // U2 = X2*Z1^2  in gfec_affine_point_add()
100    mul(S2, S2, R, pGFE);         // S2 = Y2*Z1^3  in gfec_affine_point_add()
102    sub(H, U2, px, pGFE);         // H = U2-X1  in gfec_affine_point_add()
103    sub(R, S2, py, pGFE);         // R = S2-Y1  in gfec_affine_point_add()
105    mul(pRz, H, pz, pGFE);        // Z3 = H*Z1  in gfec_affine_point_add()
107    sqr(U2, H, pGFE);             // U2 = H^2  in gfec_affine_point_add()
108    sqr(S2, R, pGFE);             // S2 = R^2  in gfec_affine_point_add()
109    mul(H, H, U2, pGFE);          // H = H^3  in gfec_affine_point_add()
111    mul(U2, U2, px, pGFE);        // U2 = X1*H^2  in gfec_affine_point_add()
113    mul(pRy, H, py, pGFE);        // T = Y1*H^3  in gfec_affine_point_add()
115    mul2(pRx, U2, pGFE);          // X3 = 2*X1*H^2  in gfec_affine_point_add()
116    sub(pRx, S2, pRx, pGFE);      // X3 = R^2 - 2*X1*H^2  in gfec_affine_point_add()
117    sub(pRx, pRx, H, pGFE);       // X3 = R^2 - 2*X1*H^2 -H^3  in gfec_affine_point_add()
119    sub(U2, U2, pRx, pGFE);       // U2 = X1*H^2 - X3  in gfec_affine_point_add()
120    mul(U2, U2, R, pGFE);         // U2 = R*(X1*H^2 - X3)  in gfec_affine_point_add()
121    sub(pRy, U2, pRy, pGFE);      // Y3 = -Y1*H^3 + R*(X1*H^2 - X3)  in gfec_affine_point_add()