Presentation 2017-11-07
Calculation method of exponential function on FPGAs using high-radix STL method
Yasufumi Fujiwara, Kazuyoshi Takagi, Naofumi Takagi,
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Abstract(in Japanese) (See Japanese page)
Abstract(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)
Keyword(in English) IEEE754-2008 / double precision / floating point / high-radix STL method / FPGA
Paper # RECONF2017-46
Date of Issue 2017-10-30 (RECONF)

Conference Information
Committee VLD / DC / CPSY / RECONF / CPM / ICD / IE / IPSJ-SLDM / IPSJ-EMB / IPSJ-ARC
Conference Date 2017/11/6(3days)
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-
Chair Hiroyuki Ochi(Ritsumeikan Univ.) / Michiko Inoue(NAIST) / Koji Nakano(Hiroshima Univ.) / Masato Motomura(Hokkaido Univ.) / Fumihiko Hirose(Yamagata Univ.) / Hideto Hidaka(Renesas) / Takayuki Hamamoto(Tokyo Univ. of Science) / Kiyoharu Hamaguchi(Shimane Univ.) / 渡辺 晴美(東海大) / Masahiro Goshima(NII)
Vice Chair Noriyuki Minegishi(Mitsubishi Electric) / Satoshi Fukumoto(Tokyo Metropolitan Univ.) / Hidetsugu Irie(Univ. of Tokyo) / Takashi Miyoshi(Fujitsu) / Yuichiro Shibata(Nagasaki Univ.) / Kentaro Sano(Tohoku Univ.) / Mayumi Takeyama(Kitami Inst. of Tech.) / Makoto Nagata(Kobe Univ.) / Kazuya Kodama(NII) / Hideaki Kimata(NTT)
Secretary Noriyuki Minegishi(Hiroshima City Univ.) / Satoshi Fukumoto(NTT) / Hidetsugu Irie(Kyoto Sangyo Univ.) / Takashi Miyoshi(Tokyo Inst. of Tech.) / Yuichiro Shibata(Utsunomiya Univ.) / Kentaro Sano(Hokkaido Univ.) / Mayumi Takeyama(Hiroshima City Univ.) / Makoto Nagata(e-trees.Japan) / Kazuya Kodama(Nihon Univ.) / Hideaki Kimata(Toyohashi Univ. of Tech.) / (Univ. of Tokyo) / (Panasonic) / (Nagoya Univ.)
Assistant / Masayuki Arai(Nihon Univ.) / Yasuaki Ito(Hiroshima Univ.) / Tomoaki Tsumura(Nagoya Inst. of Tech.) / Yuuki Kobayashi(NEC) / Hiroki Nakahara(Tokyo Inst. of Tech.) / Yuichi Akage(NTT) / Masanori Natsui(Tohoku Univ.) / Masatoshi Tsuge(Socionext) / Hiroyuki Ito(Tokyo Inst. of Tech.) / Pham Konkuha(Univ. of Electro-Comm.) / Yasutaka Matsuo(NHK) / Kazuya Hayase(NTT)

Paper Information
Registration To Technical Committee on VLSI Design Technologies / Technical Committee on Dependable Computing / Technical Committee on Computer Systems / Technical Committee on Reconfigurable Systems / Technical Committee on Component Parts and Materials / Technical Committee on Integrated Circuits and Devices / Technical Committee on Image Engineering / Special Interest Group on System and LSI Design Methodology / Special Interest Group on Embedded Systems / Special Interest Group on System Architecture
Language JPN
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.)
Date 2017-11-07
Paper # RECONF2017-46
Volume (vol) vol.117
Number (no) RECONF-279
Page pp.pp.55-59(RECONF),
#Pages 5
Date of Issue 2017-10-30 (RECONF)