Julia: Special floating point values

Julia provides special floating point values to represent Positive infinity, Negative infinity, not a number values.

Special Value	Description
Inf16	Represents positive infinity, specific to Float16 type
-Inf16	Represents negative infinity, specific to Float16 type
Inf32	Represents positive infinity, specific to Float32 type
-Inf32	Represents negative infinity, specific to Float32 type
Inf	Represents positive infinity, specific to Float64 type
-Inf	Represents negative infinity, specific to Float64 type
Nan16	Represent not a number, specific to Float16 type.
Nan32	Represent not a number, specific to Float32 type.
Nan	Represent not a number, specific to Float64 type.

Note:

Nan is not equal to any floating-point number, including Nan itself.

julia> 10/0
Inf

julia> -10/0
-Inf

julia> 23.43/Inf
0.0

julia> 23.43/-Inf
-0.0

julia> Inf/-Inf
NaN

julia> -Inf/Inf
NaN

julia> Inf16/Inf32
NaN32

julia> Inf16/Inf64
NaN

julia> Inf64/Inf16
NaN

julia> 1/Inf
0.0

julia> Inf*Inf
Inf

julia> Inf-Inf
NaN

julia> Inf+Inf
Inf

julia> Inf/Inf
NaN

You can use typemin(), typemax() functions to get minimum and maximum values for given type.

julia> (typemin(Float16),typemax(Float16))
(-Inf16,Inf16)

julia> (typemin(Float32),typemax(Float32))
(-Inf32,Inf32)

julia> (typemin(Float64),typemax(Float64))
(-Inf,Inf)

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