liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Area Efficient Floating-Point Adder and Multiplier with IEEE-754 Compatible Semantics
Linköping University, Department of Electrical Engineering, Computer Engineering. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-0111-2384
2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we describe an open source floating-point adder andmultiplier implemented using a 36-bit custom number format based onradix-16 and optimized for the 7-series FPGAs from Xilinx. Althoughthis number format is not identical to the single-precision IEEE-754format, the floating-point operators are designed in such a way thatthe numerical results for a given operation will be identical to theresult from an IEEE-754 compliant operator with support forround-to-nearest even, NaNs and Infs, and subnormalnumbers. The drawback of this number format is that the rounding stepis more involved than in a regular, radix-2 based operator. On theother hand, the use of a high radix means that the area costassociated with normalization and denormalization can be reduced,leading to a net area advantage for the custom number format, underthe assumption that support for subnormal numbers is required.

The area of the floating-point adder in a Kintex-7 FPGA is 261 sliceLUTs and the area of the floating-point multiplier is 235 slice LUTsand 2 DSP48E blocks. The adder can operate at 319 MHz and themultiplier can operate at a frequency of 305 MHz.

Place, publisher, year, edition, pages
2014.
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:liu:diva-114322OAI: oai:DiVA.org:liu-114322DiVA: diva2:789250
Conference
ICFPT2014: The 2014 International Conference on Field-Programmable Technology
Available from: 2015-02-18 Created: 2015-02-18 Last updated: 2015-02-18Bibliographically approved

Open Access in DiVA

hrfp_16_icfpt2014.pdf(269 kB)973 downloads
File information
File name FULLTEXT01.pdfFile size 269 kBChecksum SHA-512
5b3573dbc8e87015a934ca667e8c8ddb319f9fc9f9e8917c67508a984828548c1f5cb2f87fde29074289150b237d3c59b2d9424d0605d515154dbbbca8bf228b
Type fulltextMimetype application/pdf

Authority records BETA

Ehliar, Andreas

Search in DiVA

By author/editor
Ehliar, Andreas
By organisation
Computer EngineeringThe Institute of Technology
Embedded Systems

Search outside of DiVA

GoogleGoogle Scholar
Total: 973 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 538 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf