Division int32 numbers in MATLAB R2019b

4 visualizzazioni (ultimi 30 giorni)
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++?

Risposta accettata

vadim onuchin
vadim onuchin il 27 Ott 2020
Modificato: vadim onuchin il 27 Ott 2020
So, I found solution.
Need to use special division:
idivide(int32(1140), int32(32))
ans =
int32
35
  2 Commenti
Bruno Luong
Bruno Luong il 27 Ott 2020
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 il 27 Ott 2020
FYI the way MATLAB performs arithmetic on integers is documented here.

Accedi per commentare.

Più risposte (1)

Cris LaPierre
Cris LaPierre il 27 Ott 2020
Modificato: Cris LaPierre il 27 Ott 2020
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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