Stan Math Library  2.12.0
reverse mode automatic differentiation
binary_log_loss.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_BINARY_LOG_LOSS_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_BINARY_LOG_LOSS_HPP
3 
4 #include <stan/math/fwd/core.hpp>
6 
7 namespace stan {
8  namespace math {
9 
10  template <typename T>
11  inline
12  fvar<T>
13  binary_log_loss(const int y, const fvar<T>& y_hat) {
14  if (y)
15  return fvar<T>(binary_log_loss(y, y_hat.val_),
16  -y_hat.d_ / y_hat.val_);
17  else
18  return fvar<T>(binary_log_loss(y, y_hat.val_),
19  y_hat.d_ / (1.0 - y_hat.val_));
20  }
21  }
22 }
23 #endif
fvar< T > binary_log_loss(const int y, const fvar< T > &y_hat)

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