Division int32 numbers in MATLAB R2019b

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vadim onuchin
vadim onuchin 2020-10-27
评论： Steven Lord 2020-10-27
Let's see some examples:
first:
1140 / 32
ans =
35.6250
second:
int32(1140) / int32(32)
ans =
int32
36
third:
int32(1140 / 32)
ans =
int32
36
So, why division with int32 numbers is not equivalent like in C++?

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采纳的回答

vadim onuchin
vadim onuchin 2020-10-27
编辑：vadim onuchin 2020-10-27
So, I found solution.
Need to use special division:
idivide(int32(1140), int32(32))
ans =
int32
35
  2 个评论
Bruno Luong
Bruno Luong 2020-10-27
Just wonder what is the risk to overload integer "/" with idivide?
Beside Image Proceesing toolbox where else does MATLAB stock uses integers?
Steven Lord
Steven Lord 2020-10-27
FYI the way MATLAB performs arithmetic on integers is documented here.

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更多回答（1 个）

Cris LaPierre
Cris LaPierre 2020-10-27
编辑：Cris LaPierre 2020-10-27
Ran in:
int32 is for storing 32-bit integers. The result of the division is rounded to the closest integer value.
int32(32.5)
ans = int32 33
If you want to control how the rounding is handled, use idivide.

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