Re: [Iverilog-devel] 'image attribute

[Maciej S. <mac...@ce...>]

True, I prefer to follow this way too. The thing is, $sformatf returns a
string, which is seemingly impossible with the VPI interface. There are
function types: vpiSysFuncInt, vpiSysFuncReal, vpiSysFuncTime and
vpiSysFuncSized. I was wondering if adding vpiSysFuncString (in a
separate header, so the original one is not polluted) is acceptable or
is there any better method.

Regards,
Orson

On 12/07/2015 07:11 PM, Stephen Williams wrote:
> 
> First guess, I think the best would be to implement $sformatf.
> It is something that we would need anyhow.
> On 12/07/2015 08:52 AM, Maciej Sumi?ski wrote:
>> Hi,
> 
>> I am wondering what would be the right way to implement VHDL
>> 'image attribute, which returns a string representation of a
>> variable.
> 
>> The first idea is to use SV $sformatf system function, which
>> returns a string based on the formatting string (e.g. "%d" and
>> input data, but it is currently not available in Icarus. I could
>> add it, but as far as I know, the VPI standard does not allow to
>> write functions that return strings.
> 
>> What's your opinion? Should I extend VPI in Icarus to allow
>> returning strings or is there another, more elegant solution to the
>> problem?
> 
>> Regards, Orson
> 
> 
> 
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