Kotlin , code enters if statemant even when condition is false-CodePudding

I'm really confused here ... looks like a really silly mistake but I don't know what's happening. Here's little snippet of my code :

if (tempDeltaDeviation > standardDeltaDeviation) {
                        Log.e(TAG, "handleMessage: plus $tempDeltaDeviation : $standardDeltaDeviation")
                        scaleUpAnimation(deltaAnimStep, "Delta", binding.deltaImg)
}

Really basic stuff, right ? Well checking the logs I can see :

handleMessage: plus 1.57756888292539E14 : 7.8364593205657E13

Dunno but last time I was checking 1 was much smaller than 7 so why app enters if statement ?

CodePudding user response：

1.57756888292539E14 is in fact larger than 7.8364593205657E13.

These numbers are represented in scientific notation which is used to work with very small or very large numbers. 1.57756888292539E14 means: 1.57756888292539 * 10^14. By increasing the number after E by one we actually increase the resulting number 10 times. By increasing it by 6, we increase the resulting number million times (10^6 = 1000000).

Making things simple, your numbers are really:

157756888292539 (1.57756888292539 * 100000000000000)
78364593205657 (7.8364593205657 * 10000000000000)

As you can see, the first number is actually bigger.