It would seem that a simple operation, subtraction, causes problems in PowerShell. Who can explain why:
3.1 - 3 = 0.1
4.1 - 4 = 0.0999999999999996
20.1 - 20 = 0.100000000000001
It would not be desirable to fasten a rounding off, in such simple operation.
Store numbers in decimal . Like this:
PS C:\> [decimal]3.1 - 3 0.1 PS C:\> [decimal]4.1 - 4 0.1 PS C:\> [decimal]20.1 - 20 0.1 The problem you described is a common occurrence for floating-point numbers.
Source: https://ru.stackoverflow.com/questions/837403/
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