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issubnormal

issubnormal(f) -> Bool

Test whether a floating point number is subnormal

Examples

1. Check if a number is subnormal:

   julia> issubnormal(0.0)
   false

   This example checks if the floating-point number 0.0 is subnormal. The function returns false since 0.0 is not a subnormal number.

2. Check if a subnormal number is detected:

   julia> issubnormal(1.1754944e-38)
   true

   Here, the function is used to determine if the number 1.1754944e-38 (a subnormal number) is correctly recognized as subnormal. It returns true as expected.

3. Handle larger numbers that are not subnormal:

   julia> issubnormal(100.0)
   false

   This example demonstrates that even though 100.0 is a finite floating-point number, it is not considered subnormal. The function correctly returns false.

Common mistake example:

julia> issubnormal(42)
ERROR: MethodError: no method matching issubnormal(::Int64)

In this example, the function is called with an argument of type Int64. However, issubnormal is specifically for floating-point numbers and cannot be used with integers. Make sure to provide a floating-point number as an argument to issubnormal.

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