Method and apparatus for detecting underflow and overflow

Details Method and apparatus for detecting underflow and overflow Method and apparatus for detecting underflow and overflow

1994-10-14

1996-08-27

Envall, Jr., Roy N.

Boots, shoes, and leggings

36471504, 364748, G06F 700, G06F 738

Patent

active

055507670

ABSTRACT:
An underflow/overflow detector includes first circuitry that decodes an exponent into an exponent shift value and compares the exponent shift value with a normalize shift value to determine whether an underflow or overflow error will occur. The underflow overflow detector further includes second circuitry that compares the exponent to a maximum and minimum exponent value to determine whether an underflow or overflow error will occur.

REFERENCES:
patent: 4562553 (1985-12-01), Mattedi et al.
patent: 5027308 (1991-06-01), Sit et al.
patent: 5058048 (1991-10-01), Gupta et al.
patent: 5187678 (1993-02-01), Hori
patent: 5237667 (1993-08-01), Murakami et al.
patent: 5267186 (1993-11-01), Gupta et al.
patent: 5272660 (1993-12-01), Rossbach
patent: 5303175 (1994-04-01), Suzuki
IBM Technical Disclosure Bulletin: vol. 31 No. 3 Aug. 1988 Implementation of Binary Floating Point Architecture to Enable Efficient Emulation of Single and Double Precision Arithmetic.
IBM Technical Disclosure Bulletin: vol. 32 No. 3A Aug. 1989 Easy Baised Exponent Handling VIA 2's Complement Arithmetic.
IBM Technical Disclosure Bulletin: vol. 33 No. 4 Sep. 1990 Device Tomake Ultra Small Diameter VIAS In PC Cards, pp. 248-249.
Debugging one Job From Another Job pp. 245-247.
New Negative Photoresist Process, pp. 243-244.
IBM Technical Disclosure Bulletin: vol. 33 No. 9 Feb. 1991 Floating Point Exception Handling (Denormalization).
IBM Technical Disclosure Bulletin: vol. 35 No. 4A Sep. 1992 Early Exception Detection on Store with Convert.
IBM Technical Disclosure Bulletin: vol. 36 No. 03 Mar. 1993 Hardware Instuction Generation.
Elliott, et al., "Single Cycle/Writeback Cycle Floating Point Denormalization", Apr. 1994, 315-318, IBM Technical Disclosure Bulletin .
Chu, et al., "Divide Early Out for the Floating Point" Oct. 1992, 76-77, IBM Technical Disclosure Bulletin .
Chu, et al., "Early Sticky Calculation for this Floating Point", IBM Technical Disclosure Bulletin, Dec. 1991 pp. 220-223.

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