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Floating point MAC

Altera_Forum
Honored Contributor II
‎09-05-2012 06:27 PM
1,298 Views

Anyone ever have to use a floating point multiply accumulator? Im looking for tips on building one because neither altera nor opencores has FPMAC IP. 

 

Matt
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Altera_Forum
Honored Contributor II
‎09-06-2012 10:25 AM
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DSP Builder Advanced Blockset has a floating point accumulator, which you could use in conjunction with its FP multiply to create this. This would work if you want to do ax + by + cz + ... with just a single add and multiply on successive cycles. 

 

On the other hand if you want to do a(b(c + x) + y) + z, then DSP Builder cannot calculate a result on successive cycles.
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