Here goes: https://github.com/dpo/HSL.jl.
On Friday, October 9, 2015 at 5:55:36 AM UTC-4, Tony Kelman wrote:
>
> I hope you're willing/able to publish this as a package when it's ready.
> An HSLSparse.jl would be a great addition to JuliaSparse!
>
>
> On Thursday, October 8, 2015 at 6:36:04 PM UTC-7, Dominique Orban wrote:
>>
>> I'm trying to call the C interface to the HSL MA97 from Julia. It's a
>> symmetric indefinite factorization library that uses OpenMP. One of the
>> main C functions expects a void** as argument. The example that ships with
>> the library declares a void* variable named akeep. The main program doesn't
>> do anything with it except that it passes &akeep (i.e., a void**) to some
>> of the library functions. Presumably, those functions allocate memory
>> pointed to by akeep. It's a bit perplexing, but that's how it is. At the
>> end, there's a call of the form free(&akeep).
>>
>> My question is: what syntax should I use in Julia to perform the same
>> operations? Naively, I'm tempted to try something like
>>
>> akeep = Ptr{Void}
>> ccall((:some_function, "libwhatever"), Void, (Ptr{Void},), akeep)
>>
>> but that returns the error message: `convert` has no method matching
>> convert(::Type{Ptr{None}}, ::Type{Ptr{None}}).
>>
>> Replacing akeep with &akeep in the ccall returns: expected Ptr{None}, got
>> Type{Ptr{None}}.
>>
>> What might be the appropriate syntax here? And more importantly, is this
>> a recipe for a segfault?'
>>
>> This is with Julia 0.3.11.
>>
>> Thanks!
>>
>
