Function s = nustring(nu,frmt)
s = nustring(nu,frmt,prefix)
returns a string representation of the
number-unit data given by special struct nu.
Special struct nu has the form
nu.(unit) = value.
Input argument frmt contains a string with
an sprintf template for the number-to-string
conversion.
The output string will contain " + " (thus
with spaces !) between the different number-
unit pairs, but no spaces within each number-
unit pair. Because often it is not desired to
start the string with an negative value, a
prefix is added. Its default is "0pt". Its
application is canceled by input of an empty
string in the third optional input argument.
(c) 2026 fabien van mook
2026.08.20 release of this file within package "fvm-htab" under GNU GPLv3+
