function afprintf()

Function afprintf(fn,onscreen,frmt,val1,val2,...)
         s = afprintf(fn,onscreen,frmt,val1,val2,...)

formats values (of variables) val1, val2, ... according to 
the sprintf() format string frmt, and:
-- appends the resulting string to the file with 
   filename fn (if fn is a non-empty string), 
-- prints it on screen (if onscreen is 1), and/or:
-- returns it (if an output argument is requested).


(c) 2026 fabien van mook

2026.08.20 release of this file within package "fvm-miscellaneous" under GNU GPLv3+
function file "afprintf.m"
