How can i change the default size of a variable

Hi all

when i enter a variable in command window... it is showing the size of a variable is 8 bytes....

is thereany ways to change the size of the variable???

Thanks

Answer 1

[Image Analyst]

What size do you want? You can cast it if you want, for example

 intK8 = uint8(doubleK);
 intK16 = uint16(doubleK);
 singleK = single(doubleK);

Answer 2

[Walter Roberson]

The only way to change the default size of variables is to go back to MATLAB 2.x before MATLAB supported double precision.

Answer 3

[Jan]

The "size" of a variable, which is defined as a scalar is "[1 x 1]", this means "one scalar value". The "8 bytes" is the memory required to store a double value. Defining a int64 occupies 8 bytes also, while a single needs 4 bytes. A double can store a value more accurately than a single, an in consequence it requires mire bytes to be stored.

Why do you want to change the "precision" (not "size") of a variable?