Function nu_out = nusum(pm1,nu1)
nu_out = nusum(pm1,nu1,pm2,nu2,...)
returns the sum of number-unit data.
Input argument pmK is either "+" or "-", to
add or substract, respectively, the data in
the next argument.
Input argument nuK is a special struct, or an
array of special struct's. Output argument nu_out
is a single special struct.
Each special struct has the form
nuK.(unit) = number.
(c) 2026 fabien van mook
2026.08.20 release of this file within package "fvm-htab" under GNU GPLv3+