deduce_m
deduce_m2
deduce_q
deduce_q2
deduce_s
deduce_v
deduce_v2
is_m
is_q
is_v
m_traits
m_traits<M>::scalar_type
mat
q_traits
q_traits<Q>::scalar_type
quat
s_traits
scalar
v_traits
v_traits<V>::scalar_type
vec