52 void p256_init(p256_int* a) {  in p256_init()  argument
53   memset(a, 0, sizeof(*a));  in p256_init()
56 void p256_clear(p256_int* a) { p256_init(a); }  in p256_clear()  argument
63 int p256_is_zero(const p256_int* a) {  in p256_is_zero()  argument
65   for (i = 0; i < P256_NDIGITS; ++i) result |= P256_DIGIT(a, i);  in p256_is_zero()
71 static p256_digit mulAdd(const p256_int* a,  in mulAdd()  argument
80     carry += (p256_ddigit)P256_DIGIT(a, i) * b;  in mulAdd()
89                          const p256_digit* a,  in subTop()  argument
97     borrow -= *a++;  in subTop()
144                  const p256_int* a,  in p256_modmul()  argument
155     top = mulAdd(a, P256_DIGIT(b, i), 0, tmp + i);  in p256_modmul()
160   top = mulAdd(a, top_b, 0, tmp + i);  in p256_modmul()
191 int p256_is_odd(const p256_int* a) { return P256_DIGIT(a, 0) & 1; }  in p256_is_odd()  argument
192 int p256_is_even(const p256_int* a) { return !(P256_DIGIT(a, 0) & 1); }  in p256_is_even()  argument
194 p256_digit p256_shl(const p256_int* a, int n, p256_int* b) {  in p256_shl()  argument
196   p256_digit top = P256_DIGIT(a, P256_NDIGITS - 1);  in p256_shl()
200     p256_digit accu = (P256_DIGIT(a, i) << n);  in p256_shl()
201     accu |= (P256_DIGIT(a, i - 1) >> (P256_BITSPERDIGIT - n));  in p256_shl()
204   P256_DIGIT(b, i) = (P256_DIGIT(a, i) << n);  in p256_shl()
211 void p256_shr(const p256_int* a, int n, p256_int* b) {  in p256_shr()  argument
216     p256_digit accu = (P256_DIGIT(a, i) >> n);  in p256_shr()
217     accu |= (P256_DIGIT(a, i + 1) << (P256_BITSPERDIGIT - n));  in p256_shr()
220   P256_DIGIT(b, i) = (P256_DIGIT(a, i) >> n);  in p256_shr()
223 static void p256_shr1(const p256_int* a, int highbit, p256_int* b) {  in p256_shr1()  argument
227     p256_digit accu = (P256_DIGIT(a, i) >> 1);  in p256_shr1()
228     accu |= (P256_DIGIT(a, i + 1) << (P256_BITSPERDIGIT - 1));  in p256_shr1()
231   P256_DIGIT(b, i) = (P256_DIGIT(a, i) >> 1) |  in p256_shr1()
236 int p256_cmp(const p256_int* a, const p256_int* b) {  in p256_cmp()  argument
242     borrow += (p256_sddigit)P256_DIGIT(a, i) - P256_DIGIT(b, i);  in p256_cmp()
252 int p256_sub(const p256_int* a, const p256_int* b, p256_int* c) {  in p256_sub()  argument
257     borrow += (p256_sddigit)P256_DIGIT(a, i) - P256_DIGIT(b, i);  in p256_sub()
265 int p256_add(const p256_int* a, const p256_int* b, p256_int* c) {  in p256_add()  argument
270     carry += (p256_ddigit)P256_DIGIT(a, i) + P256_DIGIT(b, i);  in p256_add()
278 int p256_add_d(const p256_int* a, p256_digit d, p256_int* b) {  in p256_add_d()  argument
283     carry += (p256_ddigit)P256_DIGIT(a, i);  in p256_add_d()
292                          const p256_int* a,  in p256_modinv_vartime()  argument
297   p256_int V = *a;  in p256_modinv_vartime()