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time complexity of float multiplication

Altera_Forum
Honored Contributor II
‎08-14-2014 09:29 AM
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Can someone provide some documentation for the complexity ("big O") of the float multiplication using floating point megafunctions?

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Altera_Forum
Honored Contributor II
‎08-14-2014 09:44 AM
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Without knowing anything about the megafunctuions... 

I'd guess that multiply is fixed cost, only underflow and overflow generate special cases. 

Addition/subtraction needs to shift one of the numbers (by the difference in exponents) - so could depend on that value. 

Division is hard and slow.
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