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Altera_Forum
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14 years ago

Multiplication Rounding

Hey guys, I am multiplying two 32 bit numbers using LPM_MULT. Each number is in Q16.16 fixed point format. The product is a 64 bit Q32.32 number. I then shift the product to the ri...
Altera_Forum's avatar
Altera_Forum
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14 years ago

The receiving circuitry, in this case an adder and MAC, considers the 16 bits to the right as part of the fraction.

Going back to the Q2.2 example, you are saying that the result 3.5 is so small that it gets rounded to 1.0?