i i i Returns an init-type equivalent of a k-rate argument. Returns an init-type equivalent of a k-rate argument. i(x) (control-rate args only) Value converters perform arithmetic translation from units of one kind to units of another. The result can then be a term in a further expression. Using i() with a k-rate expression argument is not recommended, and can produce unexpected results. a, k, abs, exp, frac, int, log, log10, sqrt