November 2016
Intermediate to advanced
697 pages
14h 44m
English
Content preview from Julia: High Performance ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Integers
Julia offers support for integer numbers ranging from types Int8 to Int128, with 8 to 128 representing the number of bits used, and with unsigned variants with a
U prefix, such as UInt8. The default type (which can also be used as Int) is Int32 or Int64 depending on the target machine architecture. The bit width is given by the variable WORD_SIZE. The number of bits used by the integer affects the maximum and minimum value this integer can have. The minimum and maximum values are given by the functions typemin() and typemax() respectively, for example, typemax(Int16) returns 32767.
If you try to store a number larger than that allowed by typemax, overflow occurs. For example:
julia> typemax(Int) 9223372036854775807 # might be different ...
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