Stan Math Library  2.20.0
reverse mode automatic differentiation
diag_post_multiply.hpp
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1 #ifndef STAN_MATH_PRIM_MAT_FUN_DIAG_POST_MULTIPLY_HPP
2 #define STAN_MATH_PRIM_MAT_FUN_DIAG_POST_MULTIPLY_HPP
3 
7 #include <boost/math/tools/promotion.hpp>
8 
9 namespace stan {
10 namespace math {
11 
12 template <typename T1, typename T2, int R1, int C1, int R2, int C2>
13 Eigen::Matrix<typename boost::math::tools::promote_args<T1, T2>::type, R1, C1>
14 diag_post_multiply(const Eigen::Matrix<T1, R1, C1>& m1,
15  const Eigen::Matrix<T2, R2, C2>& m2) {
16  check_vector("diag_post_multiply", "m2", m2);
17  check_size_match("diag_post_multiply", "m2.size()", m2.size(), "m1.cols()",
18  m1.cols());
19  return m1 * m2.asDiagonal();
20 }
21 
22 } // namespace math
23 } // namespace stan
24 #endif
void check_vector(const char *function, const char *name, const Eigen::Matrix< T, R, C > &x)
Check if the matrix is either a row vector or column vector.
void check_size_match(const char *function, const char *name_i, T_size1 i, const char *name_j, T_size2 j)
Check if the provided sizes match.
Eigen::Matrix< typename boost::math::tools::promote_args< T1, T2 >::type, R1, C1 > diag_post_multiply(const Eigen::Matrix< T1, R1, C1 > &m1, const Eigen::Matrix< T2, R2, C2 > &m2)

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