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Altera_Forum
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15 years ago

Fixed-point multiplication with "altmult_complex" megafunction

Hi, I am using the altmult_complex (complex multiplier) with inputs dataa (both real and imaginary) having 16 fractional bits, and inputs datab (both real and imaginary) having 2 decimal bits a...
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Altera_Forum
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15 years ago

My implementation requires me to multiply a 14-bit number with a 18-bit number, and take 10 MSB bits as my output. So I simply let all the 32-bits be outputted and then discarded the 22 LSBs.

So after reading that link I posted earlier, I thought why should I keep two sign bits in my 10-bit output and thought of discarding the the second MSB.

Leaving all the 10 MSB as my output should be fine I suppose?