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Altera_Forum
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13 years ago

judgement on whether or not there is an overflow

I have 3 numbers x, y, z to be added together, each with the format of s1.14. Then the sum will be in the format of s3.14. How to make judgement on whether or not there is an overflow? If it is judg...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Sum is just an intermediate variable for the calculation, and the final output has the same number of bits as input. Besides, there is also an output (a flag) indicating whether there is an overflow in the final result. Then, how to make a judgement on whether or not there is an overflow, and why?