[fpc-pascal] Very vague gettickcount64 description?

[Marco van de Voort]

Op 2019-09-06 om 16:07 schreef Michael Van Canneyt:
>
>>
>> While consulting the online reference about gettickcount 
>> https://www.freepascal.org/docs-html/rtl/sysutils/gettickcount64.html
>> I could not know anything about the units involved.
>>
>> It says "It is useful for time measurements, but no assumtions should 
>> be made as to the interval between the ticks."
>>
>> I understand that in some cases the measure may deviate from the real 
>> value but perhaps, at least the units, should be stated.
>
> As a physicist by education, normally I'd agree with you about units, 
> but not in this case.
>
> In this case I will not put it because it can/will depend on the system.
>
> You should only use it for relative measurements, in that case the 
> unit does
> not matter.
>
If so, why doesn't the *nix implementation return the full precision 
rather than dividing to get in the ms range ?

I happened to run into this a few weeks ago, and considered it a mistake 
(meaning the unit was fixed ms, and the remark refering to the update 
granularity rather than unit).