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BELL TELEPHONE
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INCORPORATED
THE INFORMATION CONTAINED HEREIN I t FOR
T M I USE OF EMPLOYEES O f
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LABORATORIES.
INCORPORATED.
ANO
It
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COVER SHEET FOR TECHNICAL MEMORANDUM
TITLE
ZERBND - A Package for Polynomial
Zeros and Bounds
39199
39199-11
CASE CHARGED —
FILING C A S E S -
FILING SUBJECTS —
MM-70,-
8231
1374
1
5
DATE —
January 23,
AUTHOR
M. T. Dolan
M. A. Jenkins*
J. P. Traub
Polynomial zeros
A posteriori bounds
Zeros
ABSTRACT
This Fortran package calculates all zeros of complex
or real polynomials and provides the option of calculating
a posteriori error bounds with improvement.
the effects of roundoff error.
The bounds include
The programs are written in a
portable subset of ASA Fortran which is the intersection of
Fortrans on several different machines.
Text - 7 pages
References
Queens University, Kingston, Ontario, Canada.
E-1932-C-4 (t*68)
SEE REVERSE SIDE FOR DISTRIBUTION LIST
1970
BELL TELEPHONE LABORATORIES, INC.
MM-70-1374DISTRIBUTION
(REFER G E I 13,9-3)
COMPLETE MEMORANDUM TO
C O R R E S P O N D E N C E FILES - H O
OFFICIAL FILE COPY
(FORM E-7770) - P L U S
O N E WHITE COPY FOR
EACH ADDITIONAL
FILING CASE
REFERENCED
DATE FILE COPY
(FORM E-1328)
13 R E F E R E N C E C O P I E S
PATENT D I V I S I O N
IF M E M O R A N D U M H A S
PATENT SIGNIFICANCE
1374
137
SUP
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> C I T E D AS R E F E R E N C E S O U R C E
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