Convert to 32-bit signed integer
intArray = int32(array)
Array of any numeric class, such as single or double. If array is already of class int32, the int32 function has no effect.
Array of class int32. Values range from –231 to 231 – 1.
The int32 function maps any values in array that are outside the limit to the nearest endpoint. For example,
int32(2^31) % 2^31 = 2147483648
ans = 2147483647
When preallocating integer arrays, specify the class in the call to functions that support a class name input (such as zeros, ones or eye), rather than calling an integer conversion function. For example,
I = int32(zeros(100)); % Creates an intermediate array
is not as efficient as
I = zeros(100, 'int32'); % Preferred