intmax in 64 bits

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Sergio Zlotnik
Sergio Zlotnik 2017-6-30
评论： Steven Lord 2017-6-30
Hi all, Why the answer is not 9223372036854775807 ?
< M A T L A B (R) >
Copyright 1984-2016 The MathWorks, Inc.
R2016a (9.0.0.341360) 64-bit (glnxa64)
February 11, 2016
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Academic License
>> intmax
ans =
2147483647
  2 个评论
Stephen23
Stephen23 2017-6-30
The intmax help states " intmax('int32') is the same as intmax with no arguments."
Steven Lord
Steven Lord 2017-6-30
I understand why you're confused. Whether MATLAB is a 32-bit or a 64-bit application does not change what intmax returns. You can ask for intmax of any of the eight integer types regardless of whether you're running a 32-bit version of MATLAB or a 64-bit version of MATLAB. As Stephen and Guillaume have said, intmax is equivalent to intmax('int32').

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Guillaume
Guillaume 2017-6-30
编辑：Guillaume 2017-6-30
Because, as clearly written in the documentation, intmax with no arguments is the same as
intmax('int32')
If you want 9223372036854775807, then you need to write
intmax('int64')

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