1. UnicodeInc.(1998), Unicode Technical Report #15: Unicode Normalization Forms. ANSI/IEEE Std 754-1985: IEEE Standard for Binary Floating-Point Arithmetic. Institute of Electrical and Electronic Engineers Number 类型的一个成员，是数字的直接表示。 #### 4.3.20 Number 类型 Number 类型是表示数字的值的集合。在 ECMAScript 中，表示双精度 64 位格式（IEEE 754）的值的集合包含特殊值 “Not-a-Number”（非数字，NaN），正无穷和负无穷。 #### 4.3.21 Number 对象 Number 对象是 Object 类型的一个成员，内置 #### 4.3.22 Infinity（无穷） 原语值 Infinity 表示正无穷数值。这个值是 Number 类型的一个成员。 #### 4.3.23 NaN 原语值 NaN 表示 IEEE 标准 “非数字” 值。这个值是 Number 类型的一个成员。 ## 5 记法约定 ### 5.1 语法和词法文法 这一节描述了本规范中使用的上下文无关文法，这是 ECMAScript 程序语法结构的定义。

doable, in spite of setbacks Wrestling compilers, implementing and testing various sixit::dmath IEEE floats: shared-lib, static-lib, soft-float, and inline-asm ![Image](/uploads/documents/f/b/c/c/f only be deterministic when using the identically compiled files and run on systems that adhere to the IEEE standards. Cross platform synchronized network simulations or replays will not possible [sic].” - different, and expecting repeatable results in real programs is crying for the moon” - Nick Maclaren on IEEE 754 mailing list ## MOST OPTIMISTIC: “…with a good deal of work you may be able to coax exactly the

kotlin.Float is the type of floating-point number that is able to contain all the numbers as an IEEE 754 single-precision binary floating number with the same precision. kotlin.Float is a subtype of kotlin kotlin.Double is the type of floating-point number that is able to contain all the numbers as an IEEE 754 double-precision binary floating number with the same precision. kotlin.Double is a subtype of kotlin && ieee754Equals(A!!, B!!)) where ieee754Equals is a special intrinsic function unavailable in user-side Kotlin which performs equality comparison of two floating-point numbers according to IEEE 754 equality

CSR 和委托机制 CSR 的示意图；还添加了“标识和性能 CSR”小节，以及相应的示意图 - 为页边的图标添加了文字说明 - 更新了一些标准、机构、书籍的版本或名称，包括将 IEEE 754-2008 标准更新到 IEEE 754-2019 版本，将 RISC-V 基金会（RISC-V Foundation）更名为 RISC-V 国际基金会（RISC-V International），将《计算机组成与设计（RISC-V 硅谷工程师名人堂”。他获ACM、CRA和SIGARCH颁发的杰出成就奖。他在教学方面所获奖项包括杰出教学奖（加州大学伯克利分校）、Karstrom杰出教育家奖（ACM）、Mulligan教育奖章（IEEE），以及两次教科书卓越奖（Text and Academic Authors Association）。他最近获得的荣誉包括Tapia成就奖、BBVA基金会知识前沿奖以及ACM图灵奖，其中后两者与约翰·轩尼诗（John Project-N 的联合设计者之一。研发的工具被 10 余所高校、组织和企业团队采用，支撑 RISC-V 开源高性能处理器“香山”的敏捷开发流程，相关工作被体系结构顶会 MICRO 录用，并获 IEEE Micro Top-Picks 论文奖。参与编写《计算机系统基础第 2 版》、《计算机组成与设计（基于 RISC-V 架构）》、《数字逻辑与计算机组成》等 7 本计算机专业核心教材，含教育部“101

point (10-bit mantissa) IEEE-754-2008 binary16| |f32|float|32-bit floating point (23-bit mantissa) IEEE-754-2008 binary32| |f64|double|64-bit floating point (52-bit mantissa) IEEE-754-2008 binary64| |f128|\_Float128|128-bit |f128|\_Float128|128-bit floating point (112-bit mantissa) IEEE-754-2008 binary128| |bool|bool|true or false| |void|(none)|0 bit type| |noreturn|(none)|the type of break, continue, return, unreachable, and has the following floating point types: • f16 – IEEE-754–2008 binary16 • f32 – IEEE-754–2008 binary32 • f64 – IEEE-754–2008 binary64 • f128 – IEEE-754–2008 binary128 • c_longdouble – matches long double

backend: Compilation error: MAlonzo/RTE.hs:13:1: error: Failed to load interface for 'Numeric.IEEE' Use -v to see a list of the files searched for. This is because packages are sandboxed in \$HOME/ running the following command: cabal v2-install --lib Agda ieee754 This will register ieee754 [http://hackage.haskell.org/package/ieee754] in the GHC default environment. You may want to keep the default can create separate Agda environment by running: cabal v2-install --package-env agda --lib Agda ieee754 You then have to set the GHC_ENVIRONMENT when you invoke Agda: GHC ENVIRONMENT=agda agda -c hello-world

backend: Compilation error: MAlonzo/RTE.hs:13:1: error: Failed to load interface for 'Numeric.IEEE' Use -v to see a list of the files searched for. This is because packages are sandboxed in \$HOME/ running the following command: cabal v2-install --lib Agda ieee754 This will register ieee754 [http://hackage.haskell.org/package/ieee754] in the GHC default environment. You may want to keep the default create separate Agda environment by ## running: cabal v2-install --package-env agda --lib Agda ieee754 You then have to set the GHC_ENVIRONMENT when you invoke Agda: GHC ENVIRONMENT=agda agda -c hello-world

backend: Compilation error: MAlonzo/RTE.hs:13:1: error: Failed to load interface for 'Numeric.IEEE' Use -v to see a list of the files searched for. This is because packages are sandboxed in \$HOME/ running the following command: cabal v2-install --lib Agda ieee754 This will register ieee754 [http://hackage.haskell.org/package/ieee754] in the GHC default environment. You may want to keep the default can create separate Agda environment by running: cabal v2-install --package-env agda --lib Agda ieee754 You then have to set the GHC_ENVIRONMENT when you invoke Agda: GHC ENVIRONMENT=agda agda -c hello-world

point (10-bit mantissa) IEEE-754-2008 binary16| |f32|float|32-bit floating point (23-bit mantissa) IEEE-754-2008 binary32| |f64|double|64-bit floating point (52-bit mantissa) IEEE-754-2008 binary64| |f128|\_Float128|128-bit |f128|\_Float128|128-bit floating point (112-bit mantissa) IEEE-754-2008 binary128| |bool|bool|true or false| |void|(none)|0 bit type| |noreturn|(none)|the type of break, continue, return, unreachable, and has the following floating point types: • f16 - IEEE-754-2008 binary16 • f32 - IEEE-754-2008 binary32 • f64 - IEEE-754-2008 binary64 • f128 - IEEE-754-2008 binary128 • c_longdouble - matches long double

backend: Compilation error: MAlonzo/RTE.hs:13:1: error: Failed to load interface for 'Numeric.IEEE' Use -v to see a list of the files searched for. This is because packages are sandboxed in \$HOME/ running the following command: cabal v2-install --lib Agda ieee754 This will register ieee754 [http://hackage.haskell.org/package/ieee754] in the GHC default environment. You may want to keep the default can create separate Agda environment by running: cabal v2-install --package-env agda --lib Agda ieee754 You then have to set the GHC_ENVIRONMENT when you invoke Agda: GHC ENVIRONMENT=agda agda -c hello-world