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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
GeorgeM
If you want to have logic working in all places, you write an environment dependent wrapper and use that wrapper. Normalizing to a decent range (resolution - number of significant digits - desired 'accuracy') is always a good approach. And, if you have the issue to only be able to deal with integers 1 up to 4 bytes - pos only or neg and positive - convert (scale and offset) to desired range (always knowing how to properly interpret the 'new' value).