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    <p>You can easily wrap member functions using the following code (which is a well known solution)</p> <pre><code> class gsl_function_pp : public gsl_function { public: gsl_function_pp(std::function&lt;double(double)&gt; const&amp; func) : _func(func){ function=&amp;gsl_function_pp::invoke; params=this; } private: std::function&lt;double(double)&gt; _func; static double invoke(double x, void *params) { return static_cast&lt;gsl_function_pp*&gt;(params)-&gt;_func(x); } }; </code></pre> <p>Then you can use std::bind to wrap the member function in a std::function. Example:</p> <pre><code>gsl_function_pp Fp( std::bind(&amp;Class::member_function, &amp;(*this), std::placeholders::_1) ); gsl_function *F = static_cast&lt;gsl_function*&gt;(&amp;Fp); </code></pre> <p>However, you should be aware about the performance penalties of std::function before wrapping member functions inside gsl integration routine. See <a href="https://stackoverflow.com/questions/14677997/stdfunction-vs-template/15015502#15015502">template vs std::function </a> . To avoid this performance hit (which may or may not be critical for you), you should use templates as shown below </p> <pre><code>template&lt; typename F &gt; class gsl_function_pp : public gsl_function { public: gsl_function_pp(const F&amp; func) : _func(func) { function = &amp;gsl_function_pp::invoke; params=this; } private: const F&amp; _func; static double invoke(double x, void *params) { return static_cast&lt;gsl_function_pp*&gt;(params)-&gt;_func(x); } }; </code></pre> <p>In this case, to call a member function you need the following</p> <pre><code> Class* ptr2 = this; auto ptr = [=](double x)-&gt;double{return ptr2-&gt;foo(x);}; gsl_function_pp&lt;decltype(ptr)&gt; Fp(ptr); gsl_function *F = static_cast&lt;gsl_function*&gt;(&amp;Fp); </code></pre> <p>PS: the link <a href="https://stackoverflow.com/questions/14677997/stdfunction-vs-template/15015502#15015502">template vs std::function </a> explains that compiler usually has an easier time optimizing templates than std::function (which is critical for performance if your code is doing heavy numerical calculation). So even tough the workaround in the second example seems more cumbersome, I would prefer templates than std::function.</p>
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    1. COIt's a good solution but it still uses static member functions. anyway, i mark it as answered to close the question. i drifted away from gsl and use odeint now so i didn't test it.
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