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I’m performing a lot of calculations in javascript. I was wondering if using rounded numbers would decrease CPU usage? When I look at the inner workings of my code using console.log, the numbers have upwards of 15 decimal places.
No. JavaScript does not distinguish between integers and real numbers. It only has double-precision floats.
This means that accuracy will be best with integers or binary fractions (within the range of about 15 significant digits), but actual performance won’t vary much, if at all.