What value does this represent in the vendor library? Sometimes a double can be used. It can exactly represent a 52 bit integer.
Mark
Sent from my iPhone
> On May 18, 2018, at 1:34 PM, J. Lewis Muir <[email protected]> wrote:
>
>> On 05/18, J. Lewis Muir wrote:
>> I have a situation where I want to store a 64-bit integer (int64_t) from
>> a vendor library in asyn's parameter library. There is no asynInt64
>> interface and no asynParamInt64 type in the latest asyn. What is the
>> best way to handle this? Store it using asynParamGenericPointer?
>
> Hmm, it seems this parameter is also exposed via an ao and ai record
> using the asynInt32 device type, so I think the idea of using
> asynParamGenericPointer is out. I'm thinking, then, that the best
> approach is to convert between the 64-bit integer and the 32-bit
> integer, and report an error if the 64-bit integer from the vendor
> library ever exceeds what will fit in the 32-bit integer.... Any better
> approach?
>
> Thanks,
>
> Lewis
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