How to retrive a data from Pointer

General Usage
1

I wrote a ccall function, which returns a struct.

The function I wrote is

ccall((:BinghamSample, "libbingsam.so"),bingham_t,( Cdouble, Cdouble, Cdouble, Cint), 0, 0, 0, 10)

struct bingham_stats_t
    dF::Ptr{Cdouble}
    entropy::Cdouble
    mode::Ptr{Cdouble}
    scatter::Ptr{Ptr{Cdouble}}
end

struct bingham_t
    d::Cint
    V::Ptr{Ptr{Cdouble}}
    Z::Ptr{Cdouble}
    F::Cdouble
    stats::Ptr{bingham_stats_t}
end

and my output looks like this

bingham_t(4, Ptr{Ptr{Float64}} @0x00000000046a7010, Ptr{Float64} @0x00000000047693f0, 19.73921, Ptr{bingham_stats_t} @0x0000000000000000)

the C output for the same function looks like this

B->F = 19.739210
B->Z = [ 0.000000 0.000000 0.000000 ]
B->V[0] = [ 0.000000 1.000000 0.000000 0.000000 ]
B->V[1] = [ 0.000000 0.000000 1.000000 0.000000 ]
B->V[2] = [ 0.000000 0.000000 0.000000 1.000000 ]

How do i retrieve the value of Z and V which is a vector and Array. unsafe_load doesn’t work.

2

Not an expert with ccall, but I think you can try unsafe_load?