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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.
@Gordon
Yes, it's a shame it can't accelerate 64 bit somehow.
I really wanted to come up with a special build of Espruino that did everything in 32 bit floats and so avoided pulling in all the double-precision code - but I think as I'm using double for quite a bit of the time stuff, it might be difficult.
Have you had any luck with uClibc? You probably noticed Espruino pulls in its own maths and string libraries, which it could probably skip - with the original GCC library from a few years back some of the routines pulled in a lot of other stuff including malloc which pulled in a ~1k of RAM, which made it almost impossible to do anything on a chip with 8k RAM. Things might have changed now - or at least uClibc might help?