Saturation arithmetic in c

1. What is meant by saturation arithmetic?
2. What is saturating arithmetic and what are its advantages and disadvantages in typical multimedia applications?
3. What is unsigned saturation?

What is meant by saturation arithmetic?

Saturation arithmetic is a version of arithmetic in which all operations, such as addition and multiplication, are limited to a fixed range between a minimum and maximum value.

What is saturating arithmetic and what are its advantages and disadvantages in typical multimedia applications?

What is saturating arithmetic and how does it help? Saturating arithmetic eliminates the need for overflows and underflows on MMX instructions. If a result is out of bounds, it is saturated to the closest allowable value. Many multimedia applications benefit from saturating arithmetic by avoiding wraparound artifacts.

What is unsigned saturation?

Unsigned saturation specifies that the value is then clipped to its range. In other words, values less than 0 are converted to 0, more than 255 to 255.