inv_cloglog.hpp

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#ifndef __STAN__AGRAD__REV__INV_CLOGLOG_HPP__
#define __STAN__AGRAD__REV__INV_CLOGLOG_HPP__

#include <stan/agrad/rev/var.hpp>
#include <stan/math/functions/inv_cloglog.hpp>
#include <stan/agrad/rev/op/v_vari.hpp>

namespace stan {
  namespace agrad {

    namespace {
      class inv_cloglog_vari : public op_v_vari {
      public:
        inv_cloglog_vari(vari* avi) :
          op_v_vari(stan::math::inv_cloglog(avi->val_), avi) {
        }
        void chain() {
          avi_->adj_ -= adj_ * std::exp(avi_->val_ - std::exp(avi_->val_));
        }
      };
    }

    inline var inv_cloglog(const stan::agrad::var& a) {
      return var(new inv_cloglog_vari(a.vi_));
    }

  }
}
#endif