Other B4J (0 divided by 0) * 100 = NaN?

[cbal03]

fCount = 0
folderCount = 0
Shouldnt the result be 0?
..or am I missing something?

Dim progText As String
progText = NumberFormat((fCount / folderCount) * 100, 1, 1) & "%"

 

[Cableguy]

If I remember correctly from school, any number divided by zero is "infinite", as well as any number multiplied by zero is zero... one of those universal rules

 

[f0raster0]

in those cases I use like: If folderCount = 0 Then progText = "0%"

 

[jtare]

Any number divided by zero is undefined. So as @f0raster0 suggests, you should handle it with an if statement for example to avoid such cases.

 

[cbal03]

when i

in those cases I use like: If folderCount = 0 Then progText = "0%"

thanks. works nicely.

 

[amorosik]

If I remember correctly from school, any number divided by zero is "infinite", as well as any number multiplied by zero is zero... one of those universal rules

No
Any number, divided by zero, is an operation 'not defined'
https://it.wikipedia.org/wiki/Divisione_per_zero

 

[Cableguy]

No
Any number, divided by zero, is an operation 'not defined'

Actually, "infinite" is, by definition, not definable.... and only in the digital world it becomes defined as such.

 

[amorosik]

What I wanted to say is that for every set of numbers (natural, integer, rational, real,...) we want to discuss, some possible 'operations' are defined
The type of operation "division by zero" is not defined in any operation of any numerical system, at least if we remain in the field of classical mathematics
Then in reality, some calculators can return values (for ex. Ieee754 return infinite positive o infinite negative), even if most return a specific error precisely the infamous 'division by zero'