MATLAB Programming Fundamentals - MathWorks

50

127

NoteYou can find the maximum or minimum values for any MATLAB integer type using

the intmax and intmin functions. For floating-point types, use realmax and realmin.

Example of Combining Signed with Unsigned

Now do the same exercise with signed and unsigned integers. Again, the left-most

element determines the data type for all elements in the resulting matrix:

A = [int8(-100) uint8(100)]

A =

-100 100

B = [uint8(100) int8(-100)]

B =

100 0

The element int8(-100) is set to zero because it is no longer signed.

MATLAB evaluates each element prior to concatenating them into a combined array. In

other words, the following statement evaluates to an 8-bit signed integer (equal to 50)

and an 8-bit unsigned integer (unsigned -50 is set to zero) before the two elements are

combined. Following the concatenation, the second element retains its zero value but

takes on the unsigned int8 type:

A = [int8(50), uint8(-50)]

A =

50 0

15 Combining Unlike Classes