Float64
Float64(x [, mode::RoundingMode])
Create a Float64 from x. If x is not exactly representable then
mode determines how x is rounded.
julia> Float64(pi, RoundDown)
3.141592653589793
julia> Float64(pi, RoundUp)
3.1415926535897936See get_rounding for available rounding modes.
Examples
The Float64 function in Julia is used to create a Float64 value from a given input x. If x cannot be exactly represented as a Float64, the mode argument can be used to specify the rounding mode.
julia> Float64(pi, RoundDown)
3.141592653589793
julia> Float64(pi, RoundUp)
3.1415926535897936In the first example, Float64(pi, RoundDown) creates a Float64 value that represents π (pi) with rounding towards negative infinity.
In the second example, Float64(pi, RoundUp) creates a Float64 value that represents π with rounding towards positive infinity.
Note: The RoundDown and RoundUp rounding modes are just examples. There are several other rounding modes available in Julia which can be explored using the get_rounding function.
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See Also
BigFloat, BigInt, Dict, eltype, fieldtype, Float32, Float64, IntSet, isa, isalnum, isalpha, isascii, iseltype, isequal, isgraph, isimmutable, isinteractive, isleaftype, isnull, ispunct, isspace, issubtype, keytype, Nullable, NullException, promote_type, typeintersect, typejoin, typemax, typemin, typeof, Val, valtype,User Contributed Notes
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