About: Quadruple-precision floating-point format

Facets (new session)
Description
Metadata
Settings
- Rule:
- Inverse Functional Properties:
- "Same As":

About: Quadruple-precision floating-point format Goto Sponge NotDistinct Permalink

An Entity of Type : dbo:Software, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon

http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FQuadruple-precision_floating-point_format

In computing, quadruple precision (or quad precision) is a binary floating point–based computer number format that occupies 16 bytes (128 bits) with precision at least twice the 53-bit double precision. In IEEE 754-2008 the 128-bit base-2 format is officially referred to as binary128.

Attributes	Values
rdf:type	software
rdfs:label	Vierfache Genauigkeit (de) 四倍精度浮動小数点数 (ja) Quadruple-precision floating-point format (en) Число четверной точности (ru)
rdfs:comment	In der Informatik ist vierfache Genauigkeit (englisch quad precision) eine Bezeichnung für ein Zahlenformat, das vier Speichereinheiten im Rechner belegt. Damit sind die genauen Details abhängig vom Rechnerhersteller und dessen Speicherarchitektur. Der im folgenden Bild gezeigte 128-Bit-Datentyp ist in der aktuellen Fassung des IEEE 754-2008 Standard beschrieben: Die Bezeichnung ist nicht nur für Gleitkommazahlen vorbehalten, sondern auch für Ganzzahlformate anwendbar (Double Quadword). (de) Число́ четверно́й то́чности (англ. Quadruple precision) — компьютерный формат представления чисел с плавающей запятой, занимающий в памяти четыре последовательных ячейки (компьютерных слова; в случае 32-битного компьютера — 128 бит или 16 байт). Как правило, обозначает формат числа с плавающей запятой binary128 стандарта IEEE 754. (ru) In computing, quadruple precision (or quad precision) is a binary floating point–based computer number format that occupies 16 bytes (128 bits) with precision at least twice the 53-bit double precision. In IEEE 754-2008 the 128-bit base-2 format is officially referred to as binary128. (en) 四倍精度浮動小数点形式（よんばいせいどふどうしょうすうてん、英語: quadruple-precision floating-point format）は、浮動小数点数の形式の1つで、よく使われている通常の倍精度形式と比して、仮数部の長さが約2倍である。 Nicholas J. Higham『Accuracy and Stability of Numerical Algorithms』（2nd.e）が、カハンの言として引用している文によれば、（訳）これまでのところは、10バイトの拡張倍精度は、高精度演算の価値と高速に動作させるための実装コストとの間の妥協点としては許容できるものです。そうしてすぐにさらに2バイト分長い精度が妥当になるでしょう。そうして究極的には16バイトフォーマットもが…。この種の、より広い精度への段階的な進化はIEEE 754の規格が形成された時には既に想定されていました。とのことである。（編注: 英語版Wikipediaが孫引きしている。英語版Wikipediaの引用元が示している引用元は「W. Kahan. Computer benchmarks versus accuracy. Draft manuscript, June 1994.」となっている） (ja)
foaf:depiction
dcterms:subject	Floating point types Binary arithmetic
Wikipage page ID	23552839 (xsd:integer)
Wikipage revision ID	1121134213 (xsd:integer)
Link from a Wikipage to another Wikipage	PowerPC Power ISA Boost (C++ libraries) Arbitrary-precision arithmetic VAX Double-precision floating-point format GNU C Compiler 0 SPARC GNU Compiler Collection GNU Fortran GPL NaN MATLAB Siemens Computer number format Computing Z/Architecture C++ C (programming language) William Kahan ARM architecture Floating point types AltiVec Extended precision Fortran Carbon (programming language) Floating point PA-RISC Primitive data type Binary arithmetic Hexadecimal Itanium Vector processor LGPL Free software IBM System/360 IBM System/370 IBM System/390 Infinity Intel Fortran Compiler Microsoft Visual C++ RISC-V X86 X86-64 Long double Streaming SIMD Extensions Unit in the last place Exponent bias IBM hexadecimal floating-point IEEE 754 IEEE 754-2008 ISO/IEC 10967 Programming language Offset binary Round-off error Sign bit Single instruction, multiple data Intel C++ compiler POWER9 Significand −0 Double-precision Double precision Sun Studio (software) Exponent Precision (arithmetic) Subnormal numbers
Link from a Wikipage to an external page	https://reference.wolfram.com/language/ref/format/Real128.html, http://www.nongnu.org/hpalib/ http://babbage.cs.qc.cuny.edu/IEEE-754 https://github.com/coder0xff/QPFloat http://crd.lbl.gov/~dhbailey/mpdist/ https://gcc.gnu.org/onlinedocs/libquadmath
sameAs	Quadruple-precision floating-point format Quadruple-precision floating-point format Quadruple-precision floating-point format Quadruple-precision floating-point format Quadruple-precision floating-point format Quadruple-precision floating-point format
dbp:wikiPageUsesTemplate	dbt:As_of dbt:Citation_needed dbt:Computer_architecture_bit_widths dbt:Reflist dbt:Short_description

Faceted Search & Find service v1.17_git139 as of Feb 29 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 67 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software