Floating-point and integer multiply-add and multiply-accumulate
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United States of America Patent
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Nov 12, 2002
Grant Date -
N/A
app pub date -
Jan 21, 1999
filing date -
Jan 21, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and a device including, in one embodiment, a multiply array and at least one adder to perform a floating-point multiplication followed by an addition when operands are in floating-point format. The device is also configured to perform an integer multiplication followed by an accumulation when operands are in integer format. The device is further configured to perform a floating-point multiply-add or an integer multiply-accumulation in response to control signals. In another embodiment, the device contains an adder and the adder is capable of performing a floating-point addition and an integer accumulation. The adder is configured to be extra wide to reduce operand misalignment. Moreover, the device stalls the process in response to operand misalignment.
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