05646875 is referenced by 62 patents and cites 16 patents.

A system and method for denormalizing a floating point result is disclosed. Denormalized operands are capable of representing much smaller values than can be represented by a number normalized under the ANSI/IEEE standard 754-1985 that governs the representation of numbers in floating point notation to ensure uniformity among floating point notation users. The majority of results will be normalized operands and therefore the floating point unit pipeline is optimized to produce normalized results but contains wider exponent fields in order to represent values received as denormalized numbers. In order to return the result as a denormalized number with the smaller ANSI/IEEE exponent field, denormalization is accomplished by using the same pipeline resources by means of the floating point unit feedback path and uses one of the exponent equalizing alignment shifters and an incrementor in order to round the denormalized result. In this way, denormalized results can be provided without stopping the dispatching of instructions, without providing status bits in the register files and rename registers and without the hold signals often present in other floating point units to accomplish denormalization.

Title
Denormalization system and method of operation
Application Number
8/394854
Publication Number
5646875
Application Date
February 27, 1995
Publication Date
July 8, 1997
Inventor
David Terrence Matheny
Austin
TX, US
Steven Michael Burchfiel
Austin
TX, US
Michael Preston Taborn
Austin
TX, US
Agent
Karl O Hesse
Michael A Davis
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 7/38
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