• Home
• Julia

isfinite

isfinite(f) -> Bool

Test whether a number is finite

Examples

1. Check if a number is finite:

   julia> isfinite(10.5)
   true

   This example checks if the number 10.5 is finite, which returns true.

2. Verify if a negative number is finite:

   julia> isfinite(-3.2)
   true

   It confirms whether the negative number -3.2 is finite, returning true.

3. Handle non-finite values like infinity:

   julia> isfinite(Inf)
   false

   This example checks if the value Inf (representing infinity) is finite, which returns false.

4. Check if a complex number is finite:

   julia> isfinite(2 + 3im)
   true

   It tests whether the complex number 2 + 3im is finite, returning true.

Common mistake example:

julia> isfinite(NaN)
true

In this example, the function returns true for NaN (Not a Number), which might be unexpected. It's important to note that NaN is considered finite in Julia.

See Also

User Contributed Notes

Add a Note

The format of note supported is markdown, use triple backtick to start and end a code block.