So I am making a script that adds two numbers (decimal numbers) together, which I have encountered a problem.
I made the script, it turns out pretty good:
0.1 + 0.5 //0.6 0.2 + 0.3 //0.5
But soon I see:
0.1 + 0.2 //0.30000000000000004 0.01 + 0.06 //0.06999999999999999
And it does not look right to me. I know it is a shortcoming of using float point with finite bits, but I can't find a way to fix that.
Math.ceil //No Math.floor //No .slice //No
Is it possible to multiply the numbers by 1000 first, then add them then divide it by 1000?
This question is related to
toFixed to convert it to a string with some decimal places shaved off, and then convert it back to a number.
+(0.1 + 0.2).toFixed(12) // 0.3
It looks like IE's
toFixed has some weird behavior, so if you need to support IE something like this might be better:
Math.round((0.1 + 0.2) * 1e12) / 1e12