Android Question Double strange problem

[wizard699]

Erel why

Dim tot as Double

tot = 10.30 + 5.80 + 5.80

At the end ... tot is not equal to 21.90 but to 21.900000002 ????
Why????

 

[Erel]

Binary floating point numbers cannot accurately represent decimal numbers. You can read more about the format here: https://en.wikipedia.org/wiki/Double-precision_floating-point_format

Use NumberFormat or NumberFormat2 when you show the number and everything will work as expected.

 

[wizard699]

Thnks a lot Erel and good Sunday