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int16

Convert to 16-bit signed integer

Syntax

intArray = int16(array)

Description

intArray = int16(array) converts the elements of an array into signed 16-bit (2-byte) integers of class int16.

Input Arguments

array

Array of any numeric class, such as single or double. If array is already of class int16, the int16 function has no effect.

Output Arguments

intArray

Array of class int16. Values range from –215 to 215 – 1.

The int16 function maps any values in array that are outside the limit to the nearest endpoint. For example,

int16(2^15)   % 2^15 = 32768

returns

ans =
    32767

Examples

Convert a double array to int16:

mydata = int16(magic(100));

Alternatives

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 = int16(zeros(100));     % Creates an intermediate array

is not as efficient as

I = zeros(100, 'int16');   % Preferred 

See Also

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Tutorials

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