convolve_each(e1, e2, oper = `*`, ...)
generic_mspct
or generic_scpt
or
numeric
generic_mspct
or generic_scpt
or
numeric
oper
if present.MathFun
,
^.generic_spct
,
div-.generic_spct
, log
,
minus-.generic_spct
,
mod-.generic_spct
,
plus-.generic_spct
, round
,
sign
, slash-.generic_spct
,
times-.generic_spct