yade-dev team mailing list archive

[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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