convolve_each(e1, e2, oper = `*`, ...)generic_mspct or generic_scpt or
numericgeneric_mspct or generic_scpt or
numericoper 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