Re: [ros-dev] Please FIX: Wrong prototype and implementation in Rtl

[Filip Navara]

Oliver Schneider wrote:

>  .\lib\rtl\largeint.c
>
> There's a sutraction performed in your implementation. But actually it's a
> logical negation (asm -> NEG; C -> ~) in this function of the low and high
> part:
>
> RtlLargeIntegerNegate()
>   
>  
The implementation is actually correct... you can try it yourself:

   LARGE_INTEGER Test;

   Test.LowPart = Test.HighPart = 24;
   Test = RtlLargeIntegerNegate(Test);
   printf("%x %x\n", Test.LowPart, Test.HighPart);

The native implementation uses NEG + *SBB*.

- Filip