num::expv

Defined in header <linear/expv/expv.hpp>

template <class Op>
requires linear_operator<Op, vec<real>, vec<real>>
vec<real> expv(real t, const Op &A, const vec<real> &v, int m_max = 30,
               real tol = 1e-8);  // (1)

vec<real> expv(real t, const spmat &A, const vec<real> &v, int m_max = 30,
               real tol = 1e-8);  // (2)

Compute \(\exp(tA)v\) for any \(y=A x\) adapter.