* Originally written by Mike Hamburg
*/
-#define GF_HEADROOM 9999 /* Everything is reduced anyway */
+#define GF_HEADROOM 9999 /* Everything is reduced anyway */
#define FIELD_LITERAL(a,b,c,d,e,f,g,h) {{a,b,c,d,e,f,g,h}}
-
+
#define LIMB_PLACE_VALUE(i) 56
-void gf_add_RAW (gf out, const gf a, const gf b) {
- for (unsigned int i=0; i<8; i++) {
+void gf_add_RAW(gf out, const gf a, const gf b)
+{
+ for (unsigned int i = 0; i < 8; i++)
out->limb[i] = a->limb[i] + b->limb[i];
- }
gf_weak_reduce(out);
}
-void gf_sub_RAW (gf out, const gf a, const gf b) {
- uint64_t co1 = ((1ull<<56)-1)*2, co2 = co1-2;
- for (unsigned int i=0; i<8; i++) {
- out->limb[i] = a->limb[i] - b->limb[i] + ((i==4) ? co2 : co1);
- }
+void gf_sub_RAW(gf out, const gf a, const gf b)
+{
+ uint64_t co1 = ((1ull << 56) - 1) * 2, co2 = co1 - 2;
+
+ for (unsigned int i = 0; i < 8; i++)
+ out->limb[i] = a->limb[i] - b->limb[i] + ((i == 4) ? co2 : co1);
gf_weak_reduce(out);
}
-void gf_bias (gf a, int amt) {
- (void) a;
- (void) amt;
+void gf_bias(gf a, int amt)
+{
+ (void)a;
+ (void)amt;
}
-void gf_weak_reduce (gf a) {
- uint64_t mask = (1ull<<56) - 1;
+void gf_weak_reduce(gf a)
+{
+ uint64_t mask = (1ull << 56) - 1;
uint64_t tmp = a->limb[7] >> 56;
+
a->limb[4] += tmp;
- for (unsigned int i=7; i>0; i--) {
- a->limb[i] = (a->limb[i] & mask) + (a->limb[i-1]>>56);
- }
+ for (unsigned int i = 7; i > 0; i--)
+ a->limb[i] = (a->limb[i] & mask) + (a->limb[i - 1] >> 56);
a->limb[0] = (a->limb[0] & mask) + tmp;
}