MATLAB: Division int32 numbers in MATLAB R2019b

bugsMATLAB

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++?

Best Answer

So, I found solution.

Need to use special division:

idivide(int32(1140), int32(32))
ans =
  int32
   35

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MATLAB: How to convert int32 to real number

X_real = double(X_int32);

HTH

MATLAB: 32bits save as int32

If you look at imfinfo() of the file, you can see that the headers say it is a collection of nine images with 32 bit signed integer. If it is intended to be single instead, then the metadata is wrong.

for IDX = 1 : 9
    imgint32 = imread('lh.average.CURVATURE.tif','index',IDX);
    imgsingle{IDX} = reshape(typecast(imgint32(:), 'single'), size(img32));
end

Best Answer

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MATLAB: How to convert int32 to real number

MATLAB: 32bits save as int32

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