<p>this math:</p><p> local_8 = (int)(0x3f / (long)param_1) + 1;<br /> iVar6 = 0;<br /> do {<br /> uVar7 = (undefined2)((ulong)param_2 >> 0x10);<br /> uVar8 = (undefined2)((ulong)param_4 >> 0x10);<br /> iVar4 = (int)param_4;<br /> uVar1 = (int)*(char *)(iVar4 + iVar6) - (int)*(char *)((int)param_2 + iVar6);<br /> uVar2 = (int)uVar1 >> 0xf;<br /> local_608[iVar6] = (char)((int)((uVar1 ^ uVar2) - uVar2) / local_8) + '\x01';<br /> iVar6 = iVar6 + 1;<br /> } while (iVar6 < 0x300);</p>
