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Message #10923
Re: Body::groupMask could be unsigned int
Ok, but you still want to increase the type of variables to something
larger as int?
Anton
2014-06-01 14:51 GMT+02:00 Jan Stránský <honzik.stransky@xxxxxxxxx>:
> Hi Antom,
> I changed my opinion such that using signed types and default value to -1 is
> the best choice (as -1 = 0b1111111... in unsigned equivalent, I missed this
> feature before). To handle this in python one can use ctypes (c_int and
> c_uint) to make the value signed/unsigned)
> cheers
> Jan
>
>
>
>
>
> 2014-05-26 21:08 GMT+02:00 Anton Gladky <gladky.anton@xxxxxxxxx>:
>
>> Hi Jan,
>>
>> I agree with that. The problem is that we use in many parts of code
>> the default mask value -1 [1]. All of them should be changed (probably
>> also in some if-constructions). But I do not think it is a difficult,
>> "grep/sed" should do thinks well.
>>
>> [1]
>> https://github.com/yade/trunk/blob/master/pkg/dem/NewtonIntegrator.hpp#L79
>>
>> Best regards
>>
>> Anton
>>
>>
>> 2014-05-26 20:54 GMT+02:00 Jan Stránský <honzik.stransky@xxxxxxxxx>:
>> > Hello,
>> >
>> > currently I am running out of size of groupMask (I would need more
>> > bits), so
>> > I am planning to introduce optional compilation with some larger type.
>> > Anyway, even the size is the same, working with the full range of
>> > unsigned
>> > int bitmask is much more natural than standard signed int.
>> >
>> > Would anybody be against changing the type to unsigned int with default
>> > value UINT_MAX = 0b11111..., i.e. the body would interact with anything
>> > by
>> > default?
>> >
>> > Thanks for the feedback
>> > Jan
>> >
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>
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