  The Sinc approximation is a function approximation formula that attains
exponential convergence for rapidly decaying functions defined on the whole
real axis. Even for other functions, the Sinc approximation works accurately
when combined with a proper variable transformation. The convergence rate has
been analyzed for typical cases including finite, semi-infinite, and infinite
intervals. Recently, for verified numerical computations, a more explicit,
"computable" error bound has been given in the case of a finite interval. In
this paper, such explicit error bounds are derived for other cases.
