user-0 提问: 关于Iso C中有些语句不会翻译

回复:
user: user-1
content: 相由心生。 说是一物即不中。 搜“盲人摸太阳”。

user: user-2
content: 感觉我见过的实现好像都没有填充位 ...  引用 7 楼 Zxy0918520 的回复:[quote=引用 6 楼 user-2 的回复:] 对于有符号整数，对象表示中的位可以分为三部分：数值位，填充位，符号位。 填充位可以不出现; signed char 不能含有填充位。符号位只能占用1位。 数值位中的每一位的所代表的数值，与改类型对应的无符号整数类型的对象表示中的对应位是一致的 (如果有符号类型有M个数值位，无符号类型有N个数值位，那么 M ≤ N) 如果符号位为0，符号位不影响结果值。 如果符号位为1，结果值必须经历以下几种修改之一： — 对数值位所表示的值取反 (符号与绝对值表示；原码); — 数值位表示的值 −(2^M) (补码); — 数值位表示的值 −(2^M − 1) (反码). 具体使用哪一种方案由实现定义。对前两种表示，符号位为1，数值位全为0时，以及对最后一种表示，符号位与数值位全为1时，是否一个正常的数值也有实现定义。对于原码与反码，如果前述的表示是一个正常值，它将被称作负零。感谢 请问一下 什么是填充位。。是不是 十进制3 用二进制00000011表示，除符号位以外00000011红色部分是填充位[/quote]

user: user-1
content: 目的就是让三部分的总长度凑够8的倍数。因为每字节8位。

user: user-0
content: 引用 6 楼 user-2 的回复:对于有符号整数，对象表示中的位可以分为三部分：数值位，填充位，符号位。 填充位可以不出现; signed char 不能含有填充位。符号位只能占用1位。 数值位中的每一位的所代表的数值，与改类型对应的无符号整数类型的对象表示中的对应位是一致的 (如果有符号类型有M个数值位，无符号类型有N个数值位，那么 M ≤ N) 如果符号位为0，符号位不影响结果值。 如果符号位为1，结果值必须经历以下几种修改之一： — 对数值位所表示的值取反 (符号与绝对值表示；原码); — 数值位表示的值 −(2^M) (补码); — 数值位表示的值 −(2^M − 1) (反码). 具体使用哪一种方案由实现定义。对前两种表示，符号位为1，数值位全为0时，以及对最后一种表示，符号位与数值位全为1时，是否一个正常的数值也有实现定义。对于原码与反码，如果前述的表示是一个正常值，它将被称作负零。感谢 请问一下 什么是填充位。。是不是 十进制3 用二进制00000011表示，除符号位以外00000011红色部分是填充位

user: user-2
content: 对于有符号整数，对象表示中的位可以分为三部分：数值位，填充位，符号位。 填充位可以不出现; signed char 不能含有填充位。符号位只能占用1位。 数值位中的每一位的所代表的数值，与改类型对应的无符号整数类型的对象表示中的对应位是一致的 (如果有符号类型有M个数值位，无符号类型有N个数值位，那么 M ≤ N) 如果符号位为0，符号位不影响结果值。 如果符号位为1，结果值必须经历以下几种修改之一： — 对数值位所表示的值取反 (符号与绝对值表示；原码); — 数值位表示的值 −(2^M) (补码); — 数值位表示的值 −(2^M − 1) (反码). 具体使用哪一种方案由实现定义。对前两种表示，符号位为1，数值位全为0时，以及对最后一种表示，符号位与数值位全为1时，是否一个正常的数值也有实现定义。对于原码与反码，如果前述的表示是一个正常值，它将被称作负零。

user: user-1
content: 浮点数格式 http://bbs.csdn.net/topics/390676437

user: user-0
content: 有人么。。padding value又指的是什么

user: user-0
content: 引用 2 楼 zhao4zhong1 的回复:http://fanyi.baidu.com/#en/zh/6.2.6.2%2F2%20For%20signed%20integer%20types%2C%20the%20bits%20of%20the%20object%20representation%20shall%20be%20divided%20into%20three%0Agroups%3A%20value%20bits%2C%20padding%20bits%2C%20and%20the%20sign%20bit.%20There%20need%20not%20be%20any%20padding%20bits%3B%0Asigned%20char%20shall%20not%20have%20any%20padding%20bits.%20There%20shall%20be%20exactly%20one%20sign%20bit.%0AEach%20bit%20that%20is%20a%20value%20bit%20shall%20have%20the%20same%20value%20as%20the%20same%20bit%20in%20the%20object%0Arepresentation%20of%20the%20corresponding%20unsigned%20type%20(if%20there%20are%20M%20value%20bits%20in%20the%20signed%0Atype%20and%20N%20in%20the%20unsigned%20type%2C%20then%20M%20%E2%89%A4%20N).%20If%20the%20sign%20bit%20is%20zero%2C%20it%20shall%20not%20affect%0Athe%20resulting%20value.%20If%20the%20sign%20bit%20is%20one%2C%20the%20value%20shall%20be%20modified%20in%20one%20of%20the%0Afollowing%20ways%3A%0A%E2%80%94%20the%20corresponding%20value%20with%20sign%20bit%200%20is%20negated%20(sign%20and%20magnitude)%3B%0A%E2%80%94%20the%20sign%20bit%20has%20the%20value%20%E2%88%92(2M)%20(two%E2%80%99s%20complement)%3B%0A%E2%80%94%20the%20sign%20bit%20has%20the%20value%20%E2%88%92(2M%20%E2%88%92%201)%20(ones%E2%80%99%20complement).%0AWhich%20of%20these%20applies%20is%20implementation-defined%2C%20as%20is%20whether%20the%20value%20with%20sign%20bit%201%0Aand%20all%20value%20bits%20zero%20(for%20the%20first%20two)%2C%20or%20with%20sign%20bit%20and%20all%20value%20bits%201%20(for%20ones%E2%80%99%0Acomplement)%2C%20is%20a%20trap%20representation%20or%20a%20normal%20value.%20In%20the%20case%20of%20sign%20and%0Amagnitude%20and%20ones%E2%80%99%20complement%2C%20if%20this%20representation%20is%20a%20normal%20value%20it%20is%20called%20a%0Anegative%20zero. 这个可不好笑。。赵老师。。

user: user-1
content: http://fanyi.baidu.com/#en/zh/6.2.6.2%2F2%20For%20signed%20integer%20types%2C%20the%20bits%20of%20the%20object%20representation%20shall%20be%20divided%20into%20three%0Agroups%3A%20value%20bits%2C%20padding%20bits%2C%20and%20the%20sign%20bit.%20There%20need%20not%20be%20any%20padding%20bits%3B%0Asigned%20char%20shall%20not%20have%20any%20padding%20bits.%20There%20shall%20be%20exactly%20one%20sign%20bit.%0AEach%20bit%20that%20is%20a%20value%20bit%20shall%20have%20the%20same%20value%20as%20the%20same%20bit%20in%20the%20object%0Arepresentation%20of%20the%20corresponding%20unsigned%20type%20(if%20there%20are%20M%20value%20bits%20in%20the%20signed%0Atype%20and%20N%20in%20the%20unsigned%20type%2C%20then%20M%20%E2%89%A4%20N).%20If%20the%20sign%20bit%20is%20zero%2C%20it%20shall%20not%20affect%0Athe%20resulting%20value.%20If%20the%20sign%20bit%20is%20one%2C%20the%20value%20shall%20be%20modified%20in%20one%20of%20the%0Afollowing%20ways%3A%0A%E2%80%94%20the%20corresponding%20value%20with%20sign%20bit%200%20is%20negated%20(sign%20and%20magnitude)%3B%0A%E2%80%94%20the%20sign%20bit%20has%20the%20value%20%E2%88%92(2M)%20(two%E2%80%99s%20complement)%3B%0A%E2%80%94%20the%20sign%20bit%20has%20the%20value%20%E2%88%92(2M%20%E2%88%92%201)%20(ones%E2%80%99%20complement).%0AWhich%20of%20these%20applies%20is%20implementation-defined%2C%20as%20is%20whether%20the%20value%20with%20sign%20bit%201%0Aand%20all%20value%20bits%20zero%20(for%20the%20first%20two)%2C%20or%20with%20sign%20bit%20and%20all%20value%20bits%201%20(for%20ones%E2%80%99%0Acomplement)%2C%20is%20a%20trap%20representation%20or%20a%20normal%20value.%20In%20the%20case%20of%20sign%20and%0Amagnitude%20and%20ones%E2%80%99%20complement%2C%20if%20this%20representation%20is%20a%20normal%20value%20it%20is%20called%20a%0Anegative%20zero.

user: user-0
content: 红色部分的 不知道什么意思 自己翻译的很拗口 ，难懂。。