◆ trace_inv_quad_form_ldlt() [1/2]

template<typename T , typename EigMat2 , typename = require_all_not_st_var<T, EigMat2>>

return_type_t< T, EigMat2 > stan::math::trace_inv_quad_form_ldlt	(	LDLT_factor< T > &	A,
		const EigMat2 &	B
	)

inline

Compute the trace of an inverse quadratic form.

I.E., this computes trace(B^T A^-1 B) where the LDLT_factor of A is provided.

Template Parameters

T	type of the first matrix and the LDLT_factor
EigMat2	type of the second matrix

Parameters

A	first matrix as LDLT
B	second matrix