INNER CODE UNIT · C
k0
jlouis/enacl · c_src/enacl_ext.c:51
ErlNifUInt64 k0 = uint64_unpack(k + 0);
ErlNifUInt64 k1 = uint64_unpack(k + 8);
ErlNifUInt64 k2 = uint64_unpack(k + 16);
ErlNifUInt64 k3 = uint64_unpack(k + 24);
ErlNifUInt64 sum = 0;
ErlNifUInt64 delta = 0x9e3779b97f4a7c15;
int i;
for (i = 0; i < 32; ++i) {
sum += delta;
v0 += ((v1 << 7) + k0) ^ (v1 + sum) ^ ((v1 >> 12) + k1);
v1 += ((v0 << 16) + k2) ^ (v0 + sum) ^ ((v0 >> 8) + k3);
}
uint64_pack(out + 0, v0);
uint64_pack(out + 8, v1);
return 0;
}