Title :
Performance Impact of Using Denormalized Numbers in Basic Floating-point Operations
Author :
Tenca, Alexandre F. ; Han, Kyung-Nam ; Tran, David
Author_Institution :
Synopsys, Inc., Hillsboro
Abstract :
Manipulation of denormalized numbers in circuits for floating-point operations comes at a reasonable cost. IEEE standard 754 defines the use of denormalized values. They are incorporated into high-performance CPUs and they are gaining space in commercial products. This paper describes the extra processing steps that are required for the manipulation of denormalized numbers in floating-point addition and floating-point multiplication. It also provides the results of several experiments that show the average additional cost that designers face when creating these basic operations using cell libraries, for some CMOS technologies.
Keywords :
CMOS integrated circuits; IEEE standards; floating point arithmetic; microprocessor chips; CMOS; IEEE standard 754; cell libraries; denormalized number manipulation; floating-point addition; floating-point multiplication; high-performance CPUs; performance impact; Application software; CMOS technology; Circuit synthesis; Costs; Digital arithmetic; Floating-point arithmetic; Hardware; Integrated circuit technology; Libraries; addition; arithmetic; denormalized numbers; floating-point; multiplication;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487227
