BS 7237-1990 微处理器系统二进制浮点算法规范
时间:2024-05-19 21:44:02 来源: 标准资料网 作者：标准资料网 阅读：8339
【英文标准名称】:Specificationforbinaryfloatingpointarithmeticformicroprocessorsystems
【原文标准名称】:微处理器系统二进制浮点算法规范
【标准号】:BS7237-1990
【标准状态】:现行
【国别】:英国
【发布日期】:1990-07-31
【实施或试行日期】:1990-07-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:二进制算术;函数;微处理机;算术;算术运算;数值修约;数字计算机;计算机
【英文主题词】:Arithmetic;Binary;Binaryarithmetic;Computerhardware;Computersoftware;Dataprocessing;Definition;Definitions;Floatingpoint;Floating-pointarithmetic;Floating-pointnumbers;Informationprocessing;Mathematics;Microprocessors;Semiconductordevices
【摘要】:1ImplementationobjectivesItisintendedthatanimplementationofafloating-pointsystemconformingtothisstandardcanberealizedentirelyinsoftware,entirelyinhardware,orinanycombinationofsoftwareandhardware.Itistheenvironmentthattheprogrammeroruserofthesystemseesthatconformsorfailstoconformtothisstandard.Hardwarecomponentsthatrequiresoftwaresupporttoconformshallnotbesaidtoconformapartfromsuchsoftware.2InclusionsThisstandardspecifies:1)basicandextendedfloating-pointnumberformats;2)add,subtract,multiply,divide,squareroot,remainderandcompareoperations;3)conversionsbetweenintegerandfloating-pointnumbers;4)conversionsbetweendifferentfloating-pointformats;5)conversionsbetweenbasicformatfloating-pointnumbersanddecimalstrings,and6)floating-pointexceptionsandtheirhandling,includingnon-numbers(NaNs).3ExclusionsThisstandarddoesnotspecify:1)formatsofdecimalstringsandintegers;2)interpretationofthesignsandsignificantfieldsofNaNs,or3)binary←→decimalconversionstoandfromextendedformats.
【中国标准分类号】:L60
【国际标准分类号】:35_160
【页数】:26P;A4
【正文语种】:英语
【英文标准名称】:Textile-glass-reinforcedplastics-Prepregs,mouldingcompoundsandlaminates-Determinationofthetextile-glassandmineral-fillercontent-Calcinationmethods
【原文标准名称】:纺织玻璃纤维增强塑料.聚酯胶片,模制混合物和叠层材料.纺织玻璃纤维和矿物添充物含量的测定.煅烧法
【标准号】:BSENISO1172-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1997-04-15
【实施或试行日期】:1997-04-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:玻璃纤维;化学分析和试验;试样;塑料;模塑材料;矿物质测定;纺织玻璃纤维;填充料;增强的材料;叠层板材;定量分析;试验条件;高聚物;重量分析;含量测定
【英文主题词】:Determinationofcontent;Glassfibrefraction;Glass-fibrereinforcedplastics;Laminates;Mineralmatterdetermination;Plastics;Prepreg;Reinforcedplastics;Roasting;Testing;Textileglass
【摘要】:ThisInternationalStandardspecifiestwocalcinationmethodsforthedeterminationofthetextile-glassandmineral-fillercontentofglass-reinforcedplastics:MethodA:forthedeterminationofthetextile-glasscontentwhennomineralfillersarepresent.MethodB:forthedeterminationofthetextile-glassandmineral-fillercontentwhenbothcomponentsarepresent.ThisInternationalStandardisapplicabletothefollowingtypesofmaterial:—prepregsmadefromyarns,rovings,tapesorfabrics;—SMC,BMCandDMCmouldingcompounds;—textile-glass-reinforcedthermoplasticmouldingmaterialsandgranules;—filledorunfilledtextile-glasslaminatesmadewiththermosettingorthermoplasticresins.Themethodsarenotapplicabletothefollowingtypesofreinforcedplastic:—thosecontainingreinforcementsotherthantextileglass;—thosecontainingmaterialswhichdonotcompletelyburnoffatthetesttemperature(forexample,thosebasedonsiliconeresin);—thosecontainingmineralfillerswhichdegradeattemperaturesbelowtheminimumcalcinationtemperature.Forthesematerials,ISO11667,Fibre-reinforcedplastics—Mouldingcompoundsandprepregs—Determinationofresin,reinforcement-fibreandmineral-fillercontent—Dissolutionmethod,maybeused.
【中国标准分类号】:G32
【国际标准分类号】:83_120
【页数】:18P.;A4
【正文语种】:英语
Product Code:SAE J1984
Title:Diesel Fuel Injector Assembly Type 28 (9.5 Mm)
Issuing Committee:Diesel Fuel Injection Equipment Standards Committee
Scope:This document specifies the dimensional requirements necessary for the mounting and interchangeability of a type of fuel injector used in diesel engines.