why the subtraction gives the wrong ans.?

y=uint16(22);

>> Z=uint16(164);

>> S=y-Z

S =

0

how i get an ans = -142

[KSSV]

You are asking same question repeatedly........

[Shashank Sharma]

You are using uint all such integers are unsigned.

You cannot store negative numbers in a uint type.

Answer 1

[Shashank Sharma]

If you want to store negative it is better to convert it to int16.

This makes it possible to store negative integers.

The format is Y = int16(X);

Answer 2

[Walter Roberson]

double(y) - double(Z)

You could also get away with

int32(y) - int32(Z)

However, int16(y) - int16(Z) will not work reliably: it will have problems if any of the entries exceed 32767.