I've been using [ftom] to show various frequencies on a [kslider] keyboard. Trouble is, I'm getting results that are a semitone off when attempting to use frequencies below about 8Hz. However, if I use the floating-point version of [ftom 0.], the results come out correctly.
In my example below, I'm using @base 430.538971 to tune to a C256. But I've noticed the error at A440 as well, just going down in octaves with A until I hit 6.875Hz where [ftom] gives me a note number of -2 (a semitone off) and [ftom 0.] gives me -3 (correct).
Is this a bug?