Floating point numbers in Julia

It is easy to represent floating point numbers in Julia. They are represented in a similar fashion as they are in other languages:

# Add a decimal point
julia> 100.0
100.0

julia> 24.
24.0

# It is not required to precede a number from the decimal point
julia> .10
0.1

julia> typeof(ans)
Float64

There is a concept of positive zero and negative zero in Julia. They are equal but with different binary representations:

# equating two zeroes
julia> 0.0 == -0.0
true

julia> bits(0.0)
"0000000000000000000000000000000000000000000000000000000000000000"

# different first bit for negative zero
julia> bits(-0.0)
"1000000000000000000000000000000000000000000000000000000000000000"

Exponential notation can be very useful and convenient in various scenarios. It can be used in Julia using e:

julia> 2.99e8
2.99e8

julia> 2.99e8>999999
true

We have been using Float64 in the preceding examples. We can also use Float32 on 64-bit computers if required:

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