Count the decimal places in a finite number's shortest decimal string
decimalPlaces
Functionutilsv0.1.0
projects/utils/decimal-places.ts
Description#
Count the decimal places in a finite number's shortest decimal string.
Used to round float-drift artefacts back to the precision a step or origin
carries (e.g. 0.1 * 3 = 0.30000000000000004 snaps back to 0.3). Reads
the places off String(n) rather than a fixed epsilon so 0.125 reports 3,
not a guessed constant. Non-finite input returns 0.