Macro arctk::fmt_report

macro_rules! fmt_report {
    ($fmt: expr, $expression: expr) => { ... };
    ($fmt: expr, $expression: expr, $desc: expr) => { ... };
    ($fmt: expr, $expression: expr, $desc: expr, $units: expr) => { ... };
}

Report an object and either its associated name, or a human readable string if supplied.