77 #define f1(x)   (x)  argument
78 #define f2(x)   ((x << 1) ^ (((x >> 7) & 1) * WPOLY))  argument
79 #define f4(x)   ((x << 2) ^ (((x >> 6) & 1) * WPOLY) ^ (((x >> 6) & 2) * WPOLY))  argument
80 #define f8(x)   ((x << 3) ^ (((x >> 5) & 1) * WPOLY) ^ (((x >> 5) & 2) * WPOLY) \  argument
81                           ^ (((x >> 5) & 4) * WPOLY))
82 #define d2(x)   (((x) >> 1) ^ ((x) & 1 ? DPOLY : 0))  argument
84 #define f3(x)   (f2(x) ^ x)  argument
85 #define f9(x)   (f8(x) ^ x)  argument
86 #define fb(x)   (f8(x) ^ f2(x) ^ x)  argument
87 #define fd(x)   (f8(x) ^ f4(x) ^ x)  argument
88 #define fe(x)   (f8(x) ^ f4(x) ^ f2(x))  argument
210 #define s_box(x)     sbox[(x)]  argument
212 #define is_box(x)    isbox[(x)]  argument
214 #define gfm2_sb(x)   gfm2_sbox[(x)]  argument
215 #define gfm3_sb(x)   gfm3_sbox[(x)]  argument
217 #define gfm_9(x)     gfmul_9[(x)]  argument
218 #define gfm_b(x)     gfmul_b[(x)]  argument
219 #define gfm_d(x)     gfmul_d[(x)]  argument
220 #define gfm_e(x)     gfmul_e[(x)]  argument
229 static uint8_t hibit(const uint8_t x)  in hibit()  argument
230 {   uint8_t r = (uint8_t)((x >> 1) | (x >> 2));  in hibit()
239 static uint8_t gf_inv(const uint8_t x)  in gf_inv()  argument
240 {   uint8_t p1 = x, p2 = BPOLY, n1 = hibit(x), n2 = 0x80, v1 = 1, v2 = 0;  in gf_inv()
242     if(x < 2)  in gf_inv()
243         return x;  in gf_inv()
272 uint8_t fwd_affine(const uint8_t x)  in fwd_affine()  argument
275     uint32_t w = x;  in fwd_affine()
279     return 0x63 ^ x ^ (x << 1) ^ (x << 2) ^ (x << 3) ^ (x << 4)  in fwd_affine()
280                     ^ (x >> 7) ^ (x >> 6) ^ (x >> 5) ^ (x >> 4);  in fwd_affine()
284 uint8_t inv_affine(const uint8_t x)  in inv_affine()  argument
287     uint32_t w = x;  in inv_affine()
291     return 0x05 ^ (x << 1) ^ (x << 3) ^ (x << 6)  in inv_affine()
292                 ^ (x >> 7) ^ (x >> 5) ^ (x >> 2);  in inv_affine()
296 #define s_box(x)   fwd_affine(gf_inv(x))  argument
297 #define is_box(x)  gf_inv(inv_affine(x))  argument
298 #define gfm2_sb(x) f2(s_box(x))  argument
299 #define gfm3_sb(x) f3(s_box(x))  argument
300 #define gfm_9(x)   f9(x)  argument
301 #define gfm_b(x)   fb(x)  argument
302 #define gfm_d(x)   fd(x)  argument
303 #define gfm_e(x)   fe(x)  argument