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Paper Abstract and Keywords
Presentation 2017-11-07 13:00
Calculation method of exponential function on FPGAs using high-radix STL method
Yasufumi Fujiwara, Kazuyoshi Takagi, Naofumi Takagi (Kyoto Univ.) RECONF2017-46
Abstract (in Japanese) (See Japanese page) 
(in English) We propose the calculation method of double precision floating point exponential function for FPGA with correct rounding recommended in IEEE754-2008 standard.We consider that a calculation method using rect- angular multiplication and table reference is suitable for FPGA.Because this reason,we calculate with high-radix STL method and Taylor expansion in the method we propose.In addition, we reduce required computational accuracy for correct rounding by specifying in advance the inputs incorrectly rounded and using it to fix.
Keyword (in Japanese) (See Japanese page) 
(in English) IEEE754-2008 / double precision / floating point / high-radix STL method / FPGA / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 279, RECONF2017-46, pp. 55-59, Nov. 2017.
Paper # RECONF2017-46 
Date of Issue 2017-10-30 (RECONF) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RECONF2017-46

Conference Information
Conference Date 2017-11-06 - 2017-11-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto-Kenminkouryukan Parea 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Gaia 2017 -New Field of VLSI Design- 
Paper Information
Registration To RECONF 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Calculation method of exponential function on FPGAs using high-radix STL method 
Sub Title (in English)  
Keyword(1) IEEE754-2008  
Keyword(2) double precision  
Keyword(3) floating point  
Keyword(4) high-radix STL method  
Keyword(5) FPGA  
1st Author's Name Yasufumi Fujiwara  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Kazuyoshi Takagi  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Naofumi Takagi  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2017-11-07 13:00:00 
Presentation Time 25 minutes 
Registration for RECONF 
Paper # RECONF2017-46 
Volume (vol) vol.117 
Number (no) no.279 
Page pp.55-59 
Date of Issue 2017-10-30 (RECONF) 

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