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log_determinant.hpp
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1 #ifndef STAN__AGRAD__FWD__MATRIX__LOG_DETERMINANT_HPP
2 #define STAN__AGRAD__FWD__MATRIX__LOG_DETERMINANT_HPP
3 
4 #include <vector>
5 #include <boost/math/tools/promotion.hpp>
6 #include <stan/math/matrix/Eigen.hpp>
7 #include <stan/agrad/fwd/fvar.hpp>
8 #include <stan/agrad/fwd/matrix/typedefs.hpp>
9 #include <stan/agrad/fwd/matrix/determinant.hpp>
10 #include <stan/agrad/fwd/functions/fabs.hpp>
11 #include <stan/agrad/fwd/functions/log.hpp>
12 #include <stan/math/error_handling/matrix/check_square.hpp>
13 
14 namespace stan {
15  namespace agrad {
16 
17  template<typename T, int R,int C>
18  inline
19  fvar<T>
20  log_determinant(const Eigen::Matrix<fvar<T>, R, C>& m) {
21  stan::math::check_square("log_determinant(%1%)",m,"m",(double*)0);
22 
23  return stan::agrad::log(stan::agrad::fabs(stan::agrad::determinant(m)));
24  }
25  }
26 }
27 #endif
stan::agrad::fabs
fvar< T > fabs(const fvar< T > &x)
Definition: fabs.hpp:18
Eigen.hpp
stan::agrad::log
fvar< T > log(const fvar< T > &x)
Definition: log.hpp:15
stan::agrad::determinant
fvar< T > determinant(const Eigen::Matrix< fvar< T >, R, C > &m)
Definition: determinant.hpp:21
stan::agrad::log_determinant
fvar< T > log_determinant(const Eigen::Matrix< fvar< T >, R, C > &m)
Definition: log_determinant.hpp:20
stan::math::check_square
bool check_square(const char *function, const Eigen::Matrix< T_y, Eigen::Dynamic, Eigen::Dynamic > &y, const char *name, T_result *result)
Return true if the specified matrix is square.
Definition: check_square.hpp:24
check_square.hpp
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