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Altera_Forum
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14 years ago

Floating point addition using ALTFP_ADD_SUB core

I am having an issue while using the Altera's floating point adder.... while performing addition or subtraction between a subnormal and a normal number, altera's core treats all subnormal numb...
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Altera_Forum
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14 years ago

At a guess that is an 'optimisation' (or maybe a bug) in the VHDL to avoid the extra comparator and shifter/mux required to process the subnormal value.

Support for subnormal values as well as INF, NaN, -0 and the rounding rule(s) could be logic saving options for any FP unit.