STY003 function-missing-result

warning opt-in

A function has no result(...) clause.

Why

Without result the function's name is also its result variable: inside the function, f is the value, and a recursive call or a reference to the function as a procedure needs other syntax. A named result (result(r)) separates the two and reads unambiguously.

Reported

function norm2d(x, y)

Preferred

function norm2d(x, y) result(r)

Suppressing

For one occurrence, with the reason on the same line (or alone on the line before the statement):

! fobis: ignore[STY003] <why this occurrence is fine>

For the whole project, ignore = STY003 in the fobos [lint] section.

Equivalent

Fortitude rule S221 (see Lint Rules).