trace_gen_quad_form() [1/3]

template<typename TD , typename TA , typename TB , typename = require_all_eigen_t<TD, TA, TB>, typename = require_all_not_vt_var<TD, TA, TB>, typename = require_any_not_vt_arithmetic<TD, TA, TB>>

auto stan::math::trace_gen_quad_form ( const TD &  D, const TA &  A, const TB &  B  )

inline

Return the trace of D times the quadratic form of B and A.

That is, ‘trace_gen_quad_form(D, A, B) = trace(D * B’ * A * B).`

Template Parameters

TD	type of the first matrix or expression
TA	type of the second matrix or expression
TB	type of the third matrix or expression

Parameters

D	multiplier
A	outside term in quadratic form
B	inner term in quadratic form

Returns

trace(D * B' * A * B)

Exceptions

std::domain_error	if A or D is not square
std::domain_error	if A cannot be multiplied by B or B cannot be multiplied by D.

Definition at line 36 of file trace_gen_quad_form.hpp.